These structural sealants combine the mechanical strength of an adhesive with excellent sealing properties and high flexibility. They’re non-sagging, so they won't drip from vertical and overhead surfaces.

Elongation and joint compression/expansion tolerance indicate flexibility—the higher the values are, the more joint movement sealants can sustain. For joints between dissimilar materials and in environments with wide temperature fluctuation, choose a sealant with a higher elongation or joint compression/expansion tolerance. For high-wear applications, choose a harder sealant for the most abrasion resistance.

PTFE provides a slippery surface that keeps threads from binding. These sealants never fully harden, remaining pliable enough to self-heal and stop leaks before they start, so they’re often used in high-vibration applications that could cause standard thread sealants to fail. Since they have low locking strength, these sealants can be adjusted without tools.

Assorted adhesives and sealants for routine maintenance work or quick repairs.

Much thicker than sealants for fine threads, these sealants bridge the gaps between coarse threads. Threads coated with these sealants can be installed multiple times without recoating. They have low locking strength, so they prevent threads from loosening due to vibration and can be adjusted without tools. They meet NSF/ANSI 61 for use with drinking water.

Apply this thread sealant stick without a mess. It contains PTFE, which provides a slippery surface that keeps threads from binding. Since the sealant is anaerobic, it doesn’t begin to harden until coated surfaces are threaded together, blocking exposure to air. It has low locking strength, so it prevents threads from loosening due to vibration and can be adjusted without tools. It meets NSF/ANSI 61 for use with drinking water.

Often used in high-vibration applications that could cause standard thread sealants to fail, these never fully harden and remain pliable enough to self-heal and stop leaks before they start. Formulated without PTFE, these sealants are less slippery and less likely to result in overtightenting than sealants that have PTFE, making them good for plastic pipe where overtightening could lead to cracks and breaks. They have low locking strength, so they can be adjusted without tools.

To stop leaks in metal tanks and equipment without draining the contents, heat the area with a heat gun or torch to melt the stick and form a permanent seal. The resulting patch can withstand pressure up to 600 psi. These sticks meet NSF/ANSI 61 safety standards for use with drinking water systems.

Formulated to flow into small spaces, use these sealants between fine threads. Threads coated with these sealants can be installed multiple times without recoating. They have low locking strength, so they prevent threads from loosening due to vibration and can be adjusted without tools. They meet NSF/ANSI 61 for use with drinking water.

These sealants have high locking strength, so they work in demanding applications, such as securing mounting studs in motor housings. They also withstand applications with large temperature swings.

Apply these thread sealant sticks without a mess. They contain PTFE, which provides a slippery surface that keeps threads from binding. These sealants never fully harden, remaining pliable enough to self-heal and stop leaks before they start, so they’re often used in high-vibration applications that could cause standard thread sealants to fail. Since they have low locking strength, these sealants can be adjusted without tools. They meet NSF/ANSI 61 for use with drinking water.

These thread sealants are anaerobic, so they don’t begin to harden until coated surfaces are threaded together, blocking exposure to air.

Mix these two-part epoxy surface fillers to create a strong repair in wet environments or underwater. Use them to repair cracked, worn, and damaged surfaces. Size listed is the combined total of the two parts.

Mix these two-part surface fillers together to repair leaks and cracks as well as to rebuild rough spots in metal. The size listed is the combined total of the two parts.

Create strong, leakproof joints between unthreaded pipe and fittings.

Cement for CPVC and for PVC meets NSF/ANSI 61 safety standards for use on drinking water systems. It is also suitable for drain, waste, and vent pipes.

To speed cure time on coated fasteners, aluminum, stainless steel, or titanium, apply these adhesive primers before using threadlocker or retaining compound. They also work with no-mix acrylic adhesives.

Secure fasteners that are already installed—these threadlockers are thin enough to flow into tiny gaps.

These threadlockers meet NSF/ANSI 61 for securing fasteners in drinking water systems. They begin to harden when you thread coated surfaces together, blocking exposure to air.

Even on oily surfaces, these retaining compounds keep their hold. Use them to fill gaps up to 0.015" to secure worn cylindrical metal parts such as shafts, bearings, and press-fit assemblies. These retaining compounds begin to harden once coated surfaces are pressed together, blocking exposure to air. They meet NSF/ANSI 61 safety standards for use with drinking water systems.

Primer (sold separately) cleans the surface and decreases the time to reach full strength. It is recommended when working with aluminum, stainless steel, and titanium; black-oxide finishes, and cadmium and zinc coatings.