When it comes to fluid systems, leaks are not an option. Hernon’s industrial thread sealants are engineered for dependable sealing and locking of threaded fittings in a wide range of environments. Whether you're assembling hydraulic lines, pneumatic systems, or chemical processing equipment, our thread sealants provide a high-performance, pressure-resistant seal that prevents leakage and withstands vibration, thermal cycling, and harsh media.
Our anaerobic formulations cure in the absence of air and in contact with metal, forming a durable seal that resists loosening over time. Available in a variety of viscosities and strengths, Hernon thread sealants are ideal for OEM manufacturing and maintenance operations across the automotive, aerospace, energy, and industrial sectors.
Benefits of Hernon Thread Sealants:
Pressure-resistant and leak-proof sealing
Resistant to vibration, chemicals, and temperature extremes
Compatible with automated dispensing equipment
NSF-certified options available for potable water systems
Protect your systems, improve reliability, and simplify assembly. Browse all thread sealants here to find the right solution for your application.
Dripstop® 920 is a general-purpose anaerobic pipe sealant which contains Teflon®. It has superior sealing and mild locking performance compared to tapes and non-hardening dopes. The properties of this Dripstop® prevents galling on Stainless Steel, Aluminum, and other metal pipe fittings. Dripstop® 920 reduces costs by eliminating leakage and increasing the assembly line speed. Dripstop® 920 seals to moderate pressure immediately and to 250 psig steam pressure in just 24 hours. This sealant also lubricates threads during make-up, prevents galling and assures smooth disassembly. UL Classification – File MH14222 Classified by Underwriters Laboratories Inc.® as to fire hazard only. 920 Pipe Sealant with Teflon®. Fire hazard is small. No flash point in liquid state. Ignition temperature 455°C (851°F). For use in devices handling gasoline, petroleum oils, natural gas (pressure not to exceed 300 psig), butane and propane not exceeding 2 in. pipe size. 29R9.
SelfSealer® 618 is a tough, pre-applied, non-hardening threaded sealant. When dried, it becomes a resilient, tight clinging, non-curing sealant for tapered or straight threads. It provides an instant seal on different pipe threads and can be used up to eight (8) times without recoating. SelfSealer® 618 is water based, non-toxic, safe and can be applied easily without special handling precautions. It provides resistance to vibrational loosening because of its prevailing torque characteristics. Therefore, it is very effective on non-locking applications.
Dripstop® 912 provides maximum solvent resistance on threaded fittings and pipe up to 3” in diameter. It is recommended for refrigeration systems and service with strong chemicals. Dripstop® 912 is not for slip fitted tube joints. Dripstop® 912 has excellent solvent resistance and withstands temperatures to 300°F (149°C). This product is not recommended for use on plastic piping.
Dripstop® 945 is a high-performance adhesive/sealant specifically formulated for the sealing and mild locking of hydraulic and pneumatic threaded parts used with hydraulic and pneumatic equipment. Dripstop® 945 will seal pipe threads, standard nuts and bolts, fittings for hydraulic and pneumatic systems, air conditioners, fittings for refrigeration equipment, and all types of water and chemical processing valves and equipment, including steam up to 350°F. Dripstop® 945 is a single component, anaerobic adhesive/sealant, which will provide a rapid cure at room temperature. Upon cure, Dripstop® 945 becomes a highly crosslinked thermoset plastic preventing leakage from shock, vibration as well as corrosive liquids and atmospheres.
Dripstop® 947 is a high-performance adhesive/sealant specifically formulated for the sealing and mild locking of hydraulic and pneumatic threaded parts used with hydraulic and pneumatic equipment. Dripstop® 947 will seal pipe threads, standard nuts and bolts, fittings for hydraulic and pneumatic systems, air conditioners, fittings for refrigeration equipment, and all types of water and chemical processing valves and equipment, including steam up to 350°F. Dripstop® 947 is a single component, thixotropic (non-migrating) anaerobic adhesive/sealant, that does not contain PTFE, and will provide a rapid cure at room temperature. Upon cure, Dripstop® 947 becomes a highly crosslinked thermoset plastic preventing leakage from shock, vibration as well as corrosive liquids and atmospheres.
SelfSealer® 622 is a tough, pre-applied, non-hardening threaded sealant. SelfSealer® 622 provides an instant seal on different pipe threads and can be used up to eight (8) times without recoating. SelfSealer® 622 is water based, non-toxic, safe and can be applied easily without special handling precautions. SelfSealer® 622 provides resistance to vibrational loosening because of its prevailing torque characteristics. Therefore, it is very effective on non-locking applications.
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