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 01875, Charge-Collection Solar Tape 3011, 2 mm x 1200 m, 7010312686
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
3M 35827, Hookit Dust Extraction Flexible Sanding Block, 273 mm x 67 mm, 7100256623
Dynabrade 95746 3/8" NPT Speed Regulator
3M 77559, Cubitron II Hookit Cloth Disc 784F, 77559, 36+ to 120+, 5 in x NH, Die 500X, 7100232738
3M 06728, Premium Plastic Sheeting with 233+ Masking Tape (36 mm), 16
ft x 400 ft, 7100139893
Standard Abrasives 541151, Quick Change TS P.A.R.T. #21 Disc Mandrel, 5/8 in TA4 (PILOT), 7000121723
3M 45710, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 6 in x NH, Die 600Z, 7100113139
3M 05209, Hookit Sanding Block D/F, 70MM x 396MM, 7000028312
Dynabrade 02084 Angle Housing Assembly,Steel, Rear Exhaust
Insize 4809, U.S. STAND SHEET METAL GAGE, 0-36(.3125~.0070"), 6928640330162
3M 86745, Diamond Disc, 2" Roloc, 674W, 120 Mesh, TR, 7100022116, Box of 10
3M™ 72122, Portable Compressed Air Filter and Regulator Panel 256-02-01, 100 cfm, 8 outlets, with Carbon Monoxide Monitor, 7000052147, 1 EA/Case
3M 22409, Roloc Disc 361F, P120 XF-weight, TR, 1-1/2 in, Die R150S, 7000045103
3M 62715, Scotch-Weld Stainless Steel High Temperature Pipe Sealant PS67, White, 250 mL Tube, 7100039215, 2/case
3M 11000, Roloc Disc 361F, 24 YF-weight, TR, 2 in, Die R200P, 7000028183
Standard Abrasives 530205, A/O Resin Fiber Disc, 7 in x 7/8 in 60, 7010310605
Dynabrade 14000 Dynafile Abrasive Belt Tool
3M 45700, Cubitron II Hookit Cloth Disc 947A, 60+ X-weight, 3 in x NH, Die 300V, 7100113109
3M 20921, PSA Cloth Disc 348D, 80 X-weight, 1-1/2 in x NH, Die 150S, 7010299967
3M 11137, Roloc Disc 361F, 50 YF-weight, TR, 1-1/2 in, Die R150S, 7000045094
Dynabrade 15420 Dynafile III Abrasive Belt Tool
3M 97419, Aluminum Foil Tape 3380, Silver, 48 mm x 45 m, 3.25 mil, 7000049613
3M 29837, Sanding Screen, 180 Grit, 17 in x NH, 7100160762
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
3M 81284, Scotch-Weld High Strength Retaining Compound RT38, Green, 250 mL Bottle, 7010367436, 2/case
Dynabrade 40320 Dynafile II Abrasive Belt Tool
3M 21639, PSA Cloth Disc 348D, 36 X-weight, 6 in x NH, Die 600Z, 7000148149
3M 76630, Roloc Disc 777F, 50 YF-weight, TR, 2 in, Die R200P, 7000045627
3M 51033, Roloc Disc 361F, 36 YF-weight, TSM, 3 in, Die RS300VM, 7000148150
3M 31311, Scotch-Weld Low Odor Acrylic Adhesive DP810, Tan, 200 mL Duo-Pak, 7000121267, 12/case
3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956
3M 15041, Scotch Electrical Shielding Tape 24, 1 in x 15 ft (25 mm x 4,6 m), 7000031348
Dynabrade 51708 .1 hp Straight-Line Pencil Grinder, 35,000 RPM, 3/32" Collet
3M 77558, Cubitron II Hookit Cloth Disc 947A, 77558, 40+ to 120+, 6 in x NH, Die 600Z, 7100232737
3M 06560, Marine Adhesive Sealant 4200FC Fast Cure, White, 295 mL Cartridge, 7100006227, 12/Case
3M 14343, Marine Adhesive Sealant 4000 UV, Black, 600 mL Sausage Pack, 7010309931, 12/Case
3M 20910, PSA Cloth Disc 348D, 60 X-weight, 2 in x NH, Die 200P, 7000118872
Dynabrade 13016 Arbor Assembly 1/2"-20 Female Thread - 1/2" Male Thread
3M 26583, Accuspray Refill Pack for PPS Series 2.0, Green, 1.3 mm, 7100152953
Dynabrade 77772 5" Dia. x 7/8" Center Hole, 40 Grit, Type 27, Ceramic DynaCut Flap Disc, 10/pack
Dynabrade 51333 .7 hp Router, 4" Base, Central Vacuum, 20,000 RPM, 1/4 Collet
3M 49941, Roloc Disc 361F, 80 YF-weight, TSM, 3 in, Die RS300VM, 7000148151
3M 28135, Hookit Clean Sanding Disc 900DZ, 6 in P100 J-weight, Die 500LG, 7010300153
3M 10115, Synthetic Steel Wool Pads, #3 Coarse, 7000051986
3M Scotchkote Liquid Epoxy Coating Spray System HSS Mix Nozzle,Straight, 7000031879
3M 10120, Synthetic Steel Wool Pads, 10120NA, #000 Extra Fine, 7000126149
3M 20911, PSA Cloth Disc 348D, 50 X-weight, 2 in x NH, Die 200P, 7000118871
Standard Abrasives 42735, A/O Flap Wheel 661408, 6 in x 1 in x 1 in 120, 7010369146
3M 95725, Venture Tape Metal Building Facing Tape 1552CW, White, 72 mm x 45.7 m, 7010313505
3M 06524, Scotch Steel Gray Masking Paper, 06524, 24 in x 1000 ft, 1 per case, 7000045442
Dynabrade 92151 1/2" W x 18" L 120 Grit Ceramic DynaCut Scalloped Edge Belt, 50/pack
3M 36880, Self-Stick Liquid Protection Fabric, Blue, 36 in x 300 ft, 7100169352 
