Cures Quickly to Seal Hydraulic and Pneumatic Pipes and Fittings
3M Scotch-Weld General Purpose Pipe Sealant PS65 is a one-component, anaerobic sealant that cures and seals hydraulic and pneumatic pipes and fittings. This general purpose, paste pipe sealant is slow-curing, sealing almost instantly, and withstands high temperatures and pressure. We also designed this sealant for easy disassembly, creating a strong, tough seal that can be later disassembled with ease. This sealant is formulated to resist pressure and vibration as well as lock and seal medium to coarse straight and tapered threads.
Recommended Applications
- Pressure vessels
- Air compressors
- Hydraulic and pneumatic systems
Features of a Rapid Seal
3M Scotch-Weld General Purpose Pipe Sealant PS65 provides an almost instant low-pressure seal. A high-pressure seal results when the bond is fully cured. It seals quickly to stop leaks when applied to threads or compression fittings of most metal and certain plastic pipes, without shredding, evaporation or shrinkage. In addition, this sealant prevents galling as well as helps eliminate the waste and mess of leaking hydraulic fluids, oil, fuel and lubricants.
Formulated for Speed and Strength
Offering a rapid seal that withstands heat, pressure and vibration, 3M Scotch-Weld General Purpose Pipe Sealant PS65 is an excellent solution for fast results. Resilient and durable, this pipe sealant is formulated to produce the strong seal necessary for a wide variety of demanding applications.
Understanding Anaerobic Adhesives
Anaerobic adhesives are uniquely formulated to cure in the absence of oxygen. The term “anaerobic” means “living without air” and when the oxygen is excluded, a chemical chain reaction begins that causes the adhesive to polymerize. Contact with metal speeds the polymerization process and rapidly accelerates the curing process, forming tough cross-linked plastic that provides aggressive adhesion with effective shear strength.
More commonly referred to as threadlockers, pipe sealants, retaining compounds, and gasket makers, these adhesives are often used to enhance the seal, or holding force, in the threads of joined fastener systems such as nut-and-bolt assemblies. A nut-and-bolt assembly may have as little as 15% metal-to-metal contact and even a small amount of anaerobic adhesive readily fills any air voids between the threads and then hardens to a thermoset plastic. These unique adhesives are easy-to-dispense, cure rapidly, and provide effective torque strength while resisting temperature and vibration and sealing out moisture and gasses to protect against corrosion. Anaerobic adhesives can decrease manufacturing costs, enhance equipment reliability, minimize aftermarket breakdown, and reduce warranty claims.

3M 21463, Marine Adhesive Sealant 5200, White, 5 Gallon Drum (Pail), 7010325698
3M 22399, Roloc Disc 361F, 50 YF-weight, TR, 2 in, Die R200P, 7000028184
Dynabrade 51740 .1 hp Straight-Line Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet, with Mount Stem
Standard Abrasives 722809, PSA A/O Extra Disc, 5 in x NH, 60, 7010368721
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
ACS 3" Diamond Disc, 60 Mesh, W/ Metal Button
3M 29831, Sanding Screen, 180 Grit, 18 in x NH, 7100160238
Dynabrade 18433 Collet Insert, 1/4"
Dynabrade 11684 Dynabelter Contact Arm Assembly 4" DIA X 5/8" W., 40 Duro Serrated
3M 50258, Roloc Disc 777F, 60 YF-weight, TSM, 3 in, Die RS300VM, 7010325551
3M 45208, Disc Pad Face Plate, 5 in Soft White, 7000120521
3M 45194, Disc Pad Face Plate 45194, 7 in Soft White, 7000120522
3M 15289, 663FC, 2-3/4" X 160", 40u, Diamond Trizact Belts 7010508900
Standard Abrasives 541152, Quick Change TS P.A.R.T. #30 Disc Mandrel, 5/8 in TA4 (PILOT), 7000121724
3M 16114, PPS Lid & Liner Kit, Mini (6 fl oz), 200 Micron Full
Diameter Filter, 50 Lids & Liners per kit, 7100054606
Standard Abrasives 713638, Cartridge RoII Mandrel, 3/32 in x 3/4 in x 1/8 in x 1 in x 2-3/4 in CM-2B, 7010294964
3M 01032, Scotch-Brite Clean and Strip Unitized Wheel, CS-UW, 7S Extra Coarse, 6 in x 1 in x 5/8 in, 7000120867
3M 87449 Silver Depressed Center Grinding Wheel, T27 Quick Change, 9 in x 1/4 in x 5/8-11 Center Hub Thread, 7010409732, 20 per case
3M 07023, Particulate Respirator 8200/07023(AAD), N95, 7000052787, 160 EA/Case
3M 26585, Accuspray Atomizing Head Refill Pack for 3M PPS Series 2.0,Clear, 1.8 mm, 7100152955
Standard Abrasives 708751, PSA A/O Disc, 12 in x NH, 60, 7010370081
3Mâ„¢ 07010, Supplied Air Respirator Hose W-9435-25/07010(AAD), 25 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005374, 1 EA/Case
3M 22409, Roloc Disc 361F, P120 XF-weight, TR, 1-1/2 in, Die R150S, 7000045103
3M 71361, 641WY 1/4" X 24", 1200 Mesh Diamond Cloth Belt, 7010534916
3M 08301, Ultrapro Autobody Sealant, 08301, Tan, 5 oz Tube, 7100142901, 6 per case
3M 45710, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 6 in x NH, Die 600Z, 7100113139
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
3M 65086, Scotch-Brite Diamond Wheel, 6" x 1" x 1" 645DC, 7010329878
3M 45713, Cubitron II Hookit Cloth Disc 947A, 80+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113145
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
3M 22333, Cloth Belt 577F, 120 YF-weight, 3/4 in x 20-1/2 in, Fabri-lok, Full-flex, 7000119441, 200 per case
3M 09413, Scotch-Brite Contour Surface Paint and Varnish Remover 9413NA, 7000052005 
