Pipe Threads and Leak-Proof Seals

Pipe thread is a spiral ridge on the end of a pipe that enables pipes to be joined together. For male fittings, this thread appears on the outer diameter of the pipe; if female, it appears on the inner diameter. By rotating a male pipe end into a female thread, the two fittings become joined.

To leak-proof a pipe thread seal, a high-density thread sealant is applied to the threads of the pipe before being screwed into a fitting so that the threads will make a seal. Since pipe threads are not machined to fit together perfectly, the thread sealant makes up the difference and is compressed between the grooves on the two halves.

Hernon’sDripstop 950 is a pipe joint and thread sealant that comes highly recommended even for use in the harshest environments including instances where oxygen and aggressive chemicals such as chlorine or powerful oxidziers are present. It’s high-density inert thread sealant and lubricant, specially formulated for severe high-pressure applications.

When engineers at Boeing and NASA needed to seal fuel gauges on the Delta class rockets, they turned to Hernon Manufacturing and the Dripstop 950 product.

Dripstop 950 is odorless, non-corrosive and hydrophobic. It’s totally non-migrating and remains where it is applied. It’s ideal for use in repetitive assembly and where disassembly is required, even after long periods of time. It can seal up to 10,000 psi on 1/2″ NPT threads. Dripstop 950 thread sealant is also stable up to 450°F, it will not melt and is non-flammable.

For more information about Dripstop 950 and Hernon Manufacturing, visit http://www.hernon-oxygensealing.com/.

Leakproofing Parts & Impregnation Resins

Castings are impregnated for many reasons. One of the most common reasons is to retain gases or fluids under pressure such as air regulators, gas meters, pumps, gear housings, valves, brake parts, fuel systems parts, refrigerant compressor housings,automotive and aircraft housings, cylinder heads and liners. These parts can hold pressure up to the burst strength of the casting. Powder metal parts and plastic injection molded components are also impregnated for these reasons.

Powder metal parts and castings may also impregnated before other metal finishing operations, such as plating or painting. Cleaning agents and acids used in these operations can be absorbed into the pores and remain there during the rest of the operation. Later, these fluids emerge from the pores, causing pits, blisters, or other blemishes on the surface. Out gassing of air from the porosity during paint curing can also cause blistering. Sealing the porosity prior to this can eliminate this problem.

Impregnation technology seals leaks on all ferrous and nonferrous metals, including die castings, sand castings, investment castings, pressure castings, powdered metal parts. Iron, bronze, aluminum, zinc, magnesium, steel, sintered metal, as well as alloys of these metals can be impregnated. Other non-metallic materials, such as wood, plastic, and ceramics can also be impregnated.

Hernon Manufacturing’s impregnating equipment solutions are engineered to maximize quality control of the process, to maximize productivity, economy of sealant usage, and energy efficiency. Additionally, the company offers a complete line of impregnation products:

Hernon Porosity Sealant 990 (HPS 990) is the solution to leak proofing of cast metal components. HERNON® HPS 990 is an anaerobic-cure polymer impregnation resin. HPS 990 cures once it reaches the inner porosity of metal components.

HPS offers improved machinability and surface quality for painting and plating. The hardened resins exhibit superior chemical resistance and elevated temperature stability.

HPS 990 is certified to ANSI/NSF Standard 61 for use in commercial and residential potable water systems not exceeding 82ºC (180ºF). NSF International helps protect you and your customers by certifying products worldwide and writing internationally-recognized standards for food, water and consumer goods. As an independent, not-for-profit, global public health and safety organization, NSF is committed to improving human health and safety worldwide.

HPS 990 is also certified to military specification MIL-I-17563 Revision C-Class 1.

HPS 991 – Heat-Cure Porosity Sealant
HERNON® HPS 991 is a heat cure impregnation resin. HPS 991 does not leave a residue during the impregnation process so plating or painting is not inhibited afterwards.

HPS 1000 – Increased Washability Porosity Sealant

HERNON® HPS 1000 is a heat cure impregnation resin. HPS 1000 offers unprecedented washability which leaves virtually no residue on processed parts. HPS 1000 replaces less effective and more costly methods of sealing cast and powered metal parts.

HPS 1200 – Flexible Electronic Porosity Sealant
HERNON® HPS 1200 is designed for sealing interfacial leak paths in flexible electronic assemblies. HPS 1200 can also enhance dielectric strength or seal porosity in passive materials. Better wash-ability means that parts are not cosmetically and dimensionally changed by the impregnation process.

About Hernon: Founded in 1978, Hernon Manufacturing provides porosity sealing solutions including sealant and complete processing systems to companies throughout the world. Hernon’srange of porosity sealants include heat and anaerobic cure mechanisms. Its impregnation systems are designed to suit the foundry industry’s parts and production processes. Available systems offer good stability, predictability and improved washability during the impregnation process. Comparison to ‘classic’ sealing materials like sodium silicate shows the performance superiority of HPS impregnation. Full and complete sealing, without limitations, is the norm.

As your total solutions provider, HERNON has worked to refine this line of products and impregnation sealing equipment to meet today’s production environment rigors and need for accuracy and repeatability.

Visit http://www.hernon-impregnation.com/ for more information.

High Performance Adhesives, Sealants for Motors

Whether you’re rebuilding an electric motor, gasketing, assembling a wind turbine or other type of power generating machinery, you’ll need industrial grade adhesives, sealants, coatings, and related high performance dispensing equipment for power generation.

Need a custom solution or a ready mixed product? Hernon Manufacturing can help. For dispensing equipment, your unique power generation requirements will be addressed by a team of engineers from concept to on site setup and training. Hernon does it all.

To learn which of Hernon’s products would be ideal for your needs, please refer to the Electric Motor Rebuilding diagrams below:

“BRUSH-LESS” MOTOR COMPONENTS AND APPLICATIONS

“BRUSH-TYPE” MOTOR COMPONENTS AND APPLICATIONS

1. END BELL FASTENERS
   
   • Secure Fasteners with Nuts N’ Bolts 423 or Nuts N’ Bolts 425.
   • Refit damaged threads in end bells and housings with Metal Cement 850.
2. SHAFT KEYS AND KEYWAYS
   
   • Mount & secure new keys with Cylinlock 846 or Cylinlock 822.
   • Repair “wallowed-out” shafts with Metal Cement 850.
3. BEARINGS AND BUSHINGS
   
   • Mount & secure new bearings, bushings, sleeves and fan disks with Cylinlock 846 or Cylinlock 822.
   • Repair damaged shafts and end bells with Metal Cement 850.
4. END BELL FLANGES
   
   • Gasket & seal end bell flange faces with non-corrosive Silastomer 343.
   • Seal precision flanges or dress new pre-cut gaskets with Gasket Replacer 910 to maximize seal integrity.
5. IDENTIFICATION PLATES
   
   • Bond I.D. Plates to housings with ReAct 727 (300°F), ReAct 761 (400°F), or Quantum 138.
6. WIRE VARNISH
   
   • Strip wire varnish prior to rewinding coils / armature with Gasket Remover 30.
7. COMMUTATORS
   
   • Bond commutators to shafts with ReAct 727 (300°F), ReAct 761 (400°F), Cylinlock 846 or Cylinlock 822.
8. BRUSH HOLDERS
   
   • Bond brush holders into housings with ReAct 727 (300°F), ReAct 761 (400°F), Cylinlock 846 or Cylinlock 822.
9. LAMINATIONS
   
   • Repair separated laminations with Cylinlock 846 or Cylinlock 822.
10. CONDUIT CONNECTION BOX
    
    • Seal junctions with non-corrosive Silastomer 343.
    • Secure fasteners and connectors with Nuts N’ Bolts 420 or Nuts N’ Bolts 423.
11. MAGNETS (FERRITES)
    
    • Bond magnets to housing / shaft with ReAct 727 (300°F) or ReAct 761 (400°F).

All HERNON® products are backed with over 30 years of engineering excellence offering solutions to recognized international companies in a wide range of applications. Hernon Manufacturing also offers a complete line of semi and fully automated dispensing equipment. Learn more about our Power Generation products, visit: http://www.hernon-powergeneration.com/.

Who is Hernon Manufacturing?

Hernon Manufacturing, Inc. was founded in 1978 as a custom formulator of adhesives and sealants. Soon after participating in a grant from the Department of Defense to develop sealing compounds, Hernon began producing products at a small facility in Queens, New York. The company rapidly gained acceptance as a supplier to the General Services Administration (Purchasing Agent for the US Defense Department) and many other defense contractors, due to the demonstrated high quality and performance of their products.

In 1990, Hernon relocated operations to a newly built facility in Sanford, Florida. The current plant has a total of 25,000 square feet with additional adjacent property for future expansion to 67,000 square feet. This location houses executive offices, sales and accounting departments and complete laboratory and production capability.

Established in January 1999, Hernon Latin America LLC. is located at the Free Trade Zone in Cali-Colombia utilizing full manufacturing capabilities to serve Latin America. In September 2001, Hernon entered into a joint venture with Inchem Holdings in Singapore that is listed on the Singaporean Stock Exchange to formalize HERNON ASIA, with the primary goal to distribute Hernon’s extensive product line simultaneously in 15 Asian countries. Several repackaging/manufacturing plants and foreign branch offices are planned for the near future. A similar concept, HernonChemique was launched in 2005 to expand possibilities in Europe.

Today, Hernon Manufacturing Inc. produces over 5000 products including a wide selection of high performance adhesives and sealants. Products manufactured include anaerobics, cyanoacrylates, epoxies, acrylics, methacrylates, UV curing adhesives, impregnation resins and coatings. Hernon also designs and assembles a complete line of precision dispensing equipment and has since developed products used in: aerospace, aviation, automotive, electrical, electronic, appliance, defense, ammunition, marine, engineered plastics, heavy equipment, maintenance, and various other industries.

Hernon’s successful growth can be attributed to products, standards, and services that meet or exceed the rigorous manufacturing and safety requirements demanded by worldwide customers. Today, Hernon is a worldwide innovator of high performance adhesives, sealants, and precision dispensing equipment, supplying top-notch quality of High Performance Adhesives and Sealants at very competitive prices.

In 1999, the Hernon Manufacturing’s Quality System was registered as ISO-9001: 2000 compliant. Including the initial certification, Hernon has maintained biannual inspections without any record of a major nonconformance. Many of Hernon’s Adhesives, Sealants, and Impregnation Resins meet or exceed the stringent qualifications of the United States Military Specifications.

Beginning its third decade, Hernon Manufacturing Inc. remains committed to provide “Chemical Solutions for Mechanical Problems” well into the 21st century.

Looking for Superior Performance Over Conventional Sprinkler System Products?

With lives and property on the line, fire suppression companies turn to Hernon for ensuring a consistent seal for installed sprinkler systems.

Hernon’sline of Dripstop® sealants for fire suppression are engineered with many advantages over conventional pipe dopes. These materials harden without shrinkage in the joints creating a tough, insoluble, vibration proof seal that will not leak even if threads are damaged.

Hernon’sDripstop® sealants are 100% active containing no solvents to evaporate. They do not shred like tape dope and they are not subject to cold flow, pressure and temperature phenomena like non-hardening dopes.

Learn more at: http://www.hernon-firesuppression.com/

Developing Defense Industry Equipment and Products

Hernon Manufacturing has long been a leader in adhesives and sealants for the ammunition industry. Custom military applications are the root of Hernon’s existence. In recent years the ammunition industry, like other facets of manufacturing, has become increasingly more sophisticated. They face the same concerns as other industries regarding sustainability and ecological responsibility in an environment of increased competition.

Hernon engineers many products specifically for the ammunition industry including outer waterproofing, identification, primer sealant, blank sealant, and process equipment – such as our custom dispensing solutions that Hernon developed for large munitions producers.

Ammunition Industry Formulations:

• External Bullet Sealant 59541
• Blank Ammunition Sealant 47374, 48641, 48642, 52051, 53162, 53491
• Explosive Charge Coating 60871
• Inner Case/Shell Water Proofing
• Primer Sealant 59621, 59681
• Bullet Identification 50242
• New Shot Shell Crimp Sealant

Ammunition Industry Process Equipment:

Hernon has introduced a specialized website addressing products for this industry at http://ammo.hernon.com. This site features products including outer waterproofing, identification, primer sealant, blank sealant, and process equipment. Visitors to the site can view videos of custom dispensing solutions that Hernon has developed for large munitions producers. Some examples of Hernon Manufacturing's Ammunition process equipment:

• Sureshot 3500 Microjet is capable of dispensing 6000 shots per minute of one microliter each. HernonsMicrojet Technology facilitates precision, no contact, high speed dispensing. As result of the companies persistent commitment to quality and thorough testing they can ensure continuous microjetting for hundreds of millions of dispense cycles in a hardened industrial environment without variation and or failure. Watch the Sureshot 3500 Microjet video now: http://ammo.hernon.com/images/videos/3500-micro-jet.wmv
• HernonAutosealer 5500 Sealant Assembly System is capable of sealing the bullet and primer of fully assembled pistol, rifle and blank ammunition cartridges . Optional high speed robotic cartridge part loading facilitates system speeds of 250- 300 PPM. Changing machine tooling from one caliber to another can be accomplished in minutes. Watch the Autosealer 5500 video now: http://www.youtube.com/watch?v=jboSOEIIOoE&feature=youtu.be
• Hernon Manufacturing can also offer a Stand-Alone System or integrate the Sureshot 3500 Microjet dispensing and U.V. Curing Systems on a customer's present production machine. Hernon also manufactures a complete line of ammunition sealants for bullets , primers, blank ammunitions and shotgun shell crimps. Watch the Pick and Place Bullet Sealing video now: http://www.youtube.com/watch?v=to5ImQDXOA4&feature=youtu.be

Hernon provides high speed application and inspection equipment to some of the world’s largest defense contractors. In addition to custom and standard dispensing and curing equipment, Hernon produces and distributes an extensive line of sealants for military and commercial use. Hernon produces numerous Mil-Spec qualified sealants, is an ISO-9001:2008 registered company and has received ITAR Registration – the International Traffic in Arms Regulations Registration. Hernon was chosen to win the William C. Schwartz Industry Innovation Award for having developed new water-proofing technology for ammunition used by the military and law enforcement, as well as for an advanced process of applying sealants to bullets.

Hernon Manufacturing has been in business for more than 30 years and offers solutions to recognized international companies in applications such as automotive, electrical, electronics, communication, aerospace, appliances, military ammunition, power generation, and transportation. These technologies include anaerobic, cyanoacrylate, epoxies, acrylics, mathacrylates, and UV visible cure.
For more information visit http://hernon.com.

A Validated DEF Compatible Thread Sealant

In 2010, stricter EPA standards were set in place and enforcement began requiring all new diesel engines built, to switch over to DEF (diesel exhaust fluid) technology to help neutralize NOx emissions. Typically, in DEF bulk transport and transfer equipment, stainless steel fittings are used. Dripstop® 940 is specially formulated to work with stainless steel and now shows compatibility with DEF.

Hernon Manufacturing submitted samples of its Dripstop® 940, an anaerobic pipe sealant, to Intertek which conducts thousands of automotive fuel and lubricant analytical tests each month. The product received the necessary approvals and exhibited 100% passing results for the requirements stated in the ISO-22241.

Normally, inactive materials like stainless would require a primer to assure predictable cure. Dripstop® 940 is formulated to cure without the necessity of a primer, but, priming does reduce cure time. The enhanced chemistry of Dripstop® 940 delivers a super-fast cure speeds on conventional materials, like carbon steel, brass, etc. This pipe sealant withstands high pressures, sealing up to 250psig steam at 400°F (204°C) continuous service while maintaining its chemical inertness. It also lubricates threads during assembly, prevents galling, and assures smooth disassembly.

Hernon Manufacturing submitted samples of its Dripstop® 940, an anaerobic pipe sealant, to Intertek which conducts thousands of automotive fuel and lubricant analytical tests each month. The product received the necessary approvals and exhibited 100% passing results for the requirements stated in the ISO-22241.

To receive a copy of the test results of Dripstop® 940's Diesel Exhaust Fluid Compatibility call 407-322-4000.

HERNON Manufacturing has been committed to delivering world class adhesive, sealant, and impregnation solutions along with precision dispensing systems for nearly four decades. HERNON offers strong brands and technologies, all made in the United States, for a diverse range of industries. HERNON Manufacturing is proud to be an ISO-9001 registered company whose products meet or exceed Mil-Specs. HERNON Manufacturing has been recognized as a top company in Orlando and is listed in the Orlando Business Journal’s Book of Lists. The company also was awarded the 2012 ThinkGlobal Exporter of the Year, named one of Florida's Top Companies to Watch in 2012, and has received the 2012 William C. Schwartz Industry Innovation Award for its advanced process for ammunition coatings. Visit http://hernon.com for more information.