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 22392, Roloc Disc 361F, 24 YF-weight, TR, 3 in, Die R300V, 7000045090
3M 08025, Adhesive Sealant 740 UV, Black, 600 mL Sausage Pack, 7100057385, 12/Case
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
3M 95725, Venture Tape Metal Building Facing Tape 1552CW, White, 72 mm x 45.7 m, 7010313505
3M 45714, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113113
3M 45704, Cubitron II Hookit Cloth Disc 947A, 60+ X-weight, 5 in x NH, Die 500X, 7100113137
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
Dynabrade 11477 Dynabelter Abrasive Belt Tool, Heavy-Duty
Standard Abrasives 42527, A/O Flap Wheel 623410, 2 in x 1 in x 1/4-20 in 180, 7010368975, 10 per case
3M 62606, Scotch-Weld Threadlocker TL42, Blue, 50 mL Bottle, 7100039193, 10/case
3M 55888, Rugged Comfort 6583 / 55888 Exhalation Valve, System Component, 7000128253, 10 EA/Bag
3M 77559, Cubitron II Hookit Cloth Disc 784F, 77559, 36+ to 120+, 5 in x NH, Die 500X, 7100232738
3M 80510, Roloc Disc 777F, P120 YF-weight, TR, 1 in, Die R100N, 7000045622
Dynabrade 51629 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 1/8" Collet
3M 19765, Utility Cloth Sheet 314D, 9 in x 11 in P280 J-weight, 7000000353
3M 16112, PPS Lid & Liner Kit, Midi (13.5 fl oz), 200 Micron Full
Diameter Filter, 50 Lids & Liners per kit, 7100020094
3M 35083, EMI Copper Foil Shielding Tape 1181, 1/4 in x 18 yd (6,35 mm x 16,5 m), 7000132168
3M 14593, Scotch-Brite Cut and Polish Disc, 3" x 1-1/4" x 1/4" A Medium, D5, 7000045941, Box of 10
3M 19770, Utility Cloth Sheet 314D, 9 in x 11 in P120 J-weight, 7000000358
3M 19773, Utility Cloth Sheet 314D, 9 in x 11 in P60 X-weight, 7000000360
3M 45717, Cubitron II Hookit Cloth Disc 947A, 80+ X-weight, 5 in x NH, D/F 5HL, Die 500FH, 7100113111
3M 01425, Stikit Gold Disc Roll, 5 in, P150, 7010291071, 175 discs per roll
3M 06536, Scotch Steel Gray Masking Paper, 06536, 36 in x 1000 ft, 1 per case, 7000045443
Dynabrade 92151 1/2" W x 18" L 120 Grit Ceramic DynaCut Scalloped Edge Belt, 50/pack
3M 77197, Scotch-Briteâ„¢ Rolocâ„¢ Deburr and Finish PRO Unitized Wheel,TR, 3 in x 1/8 in x NH, 8C CRS+, 7100109130, 40/box
Dynabrade 60051 .1 hp Straight-Line Quick-Change Pencil Grinder, Rear Exhaust, 60,000 RPM, 1/8" Collet
3M 86992, Diamond Disc, 3" Roloc, 674W, 120 Mesh, TR, 7100143477, Box of 5
3M 45709, Cubitron II Hookit Cloth Disc 947A, 80+ X-weight, 6 in x NH, Die 600Z, 7100113080
Dynabrade 02084 Angle Housing Assembly,Steel, Rear Exhaust
3M 10115, Synthetic Steel Wool Pads, #3 Coarse, 7000051986
3M 76750, Roloc Disc 777F, 60 YF-weight, TS, 2 in, Die RS200P, 7010299188
3M 22972, Disc Holder Adapter 9, 5/8-11 External M10-1.50 Internal, 7000046095
Dynabrade 92187 1" W x 30" L 80 Grit A/Z DynaCut Belt, 50/pack
Standard Abrasives 531202, Quick Change Aluminum Oxide Resin Fiber Disc, 24, TN, Brown, 7 in, Die TN700BB, 7010369490, 25/case
3M 22408, Roloc Disc 361F, P100 YF-weight, TR, 1-1/2 in, Die R150S, 7000045101
Dynabrade 78176 2" Dia. Medium NWN VT DynaBrite TR Locking-Type Disc, 25/pack
Dynabrade 14360 Pneumatic Pipe Belt Finisher
3M 64324, Foil Tape 3340, Silver, 72 mm x 45.7 m, 3.9 mil, 7010335734
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit
3M 05208, Hookit Sanding Block D/F, 70MM x 198MM, 7000028311
3M 28126, Hookit Clean Sanding Disc 900DZ, 5 in 80 J-weight, Die 500LG, 7010290258
3M 10116, Synthetic Steel Wool Pads, 10116NA, #2 Medium, 2 in x 4 in, 7000047708
3M 02405, Utility Cloth Sheet 211K, 9 in x 11 in 220 J-weight, 7010299775
3M 16301, PPS Lid & Liner Kit, Standard (22 fl oz), 125 Micron Full
Diameter Filter, 50 Lids & Liners per kit, 7010029842 
