Reliable Seal on Hard-to-Stick-to Surfaces
We engineered our 3M™ Sealing Tape 8777 as a high-tack, translucent tape with a thin, proprietary film backing and high-tack acrylic adhesive available on a split liner. This is a self-adhered tape designed for sealing difficult-to-stick surfaces, even damp surfaces. Built with a waterproof membrane and proprietary backing, this tape seals around nails and staples to prevent moisture intrusion and establishes an air barrier. This sealing tape is UV-resistant (up to 12 months) and the adhesive will not melt or stain when exposed to heat. The tough, unique backing of this tape resists punctures and tears during application, but is also thin and conformable, conveniently fitting into corners. We gave this high tack tape a split release liner to allow for simple and fast application and accurate positioning of the tape. This product is compatible with many building sealants and has a unique acrylic pressure sensitive adhesive that aggressively adheres at low and high application temperature (0°F/-18°C to 150°F/66°C).
Recommended Applications
3M™ Sealing Tape 8777 can be used for a variety of applications, including:
- Deck joist and header board sealing
- Seal window and door openings against moisture intrusion
Resilient Waterproof Tape Solution
Designed for those hard-to-stick-to surfaces, 3M™ Sealing Tape 8777 offers a resilient and waterproof solution for tough applications. We built this tape to be durable in extreme temps and resistant to the wear and tear of harsh environments. For a strong sealing tape that is also thin and conformable, look no further than 3M™ Sealing Tape 8777 and enjoy the advantages of one of our many innovative tape designs prepared to meet your everyday challenges.

3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
ACS CX1250 Diamond Belts, 1/2" X 24" 45u
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
3M 11137, Roloc Disc 361F, 50 YF-weight, TR, 1-1/2 in, Die R150S, 7000045094
3M 76783, Cubitron II Hookit Cloth Disc 784F, 120+ XF-weight, 5 in x NH, Die 500X, 7100222757
3M™ 17323, Versaflo™ Respiratory Helmet Assembly M-407, with Premium Visor and Flame Resistant Shroud, 7000002395, 1 EA/Case
3M 22405, Roloc Disc 361F, P100 YF-weight, TR, 3 in, Die R300V, 7000045102
3M 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
3M™ 53797, Flexible Diamond Belt 6451J, 1/2" Dia x 18" L, M125 Micron, Type G, Pattern B2, 7010509272
3M™ 72010, Replacement Filter Kit 523-01-29, 7000056891, 1 EA/Case
3M 71361, 641WY 1/4" X 24", 1200 Mesh Diamond Cloth Belt, 7010534916
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
3M™ 72787, Calibration Kit 529-04-48, Large, 7000052154, 1 EA/Case
3M 22393, Roloc Disc 361F, 36 YF-weight, TR, 3 in, Die R300V, 7000045093
3M 11419, Roloc Disc 361F, P240 XF-weight, TR, 2 in, Die R200P, 7000045105
3M 22407, Roloc Disc 361F, 80 YF-weight, TR, 1-1/2 in, Die R150S, 7000045099
3M 01326, PSA Cloth Disc 348D, P240 X-weight, 3 in x NH, Die 300V, 7000045069
3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095
3M 11414, Roloc Disc 361F, P120 XF-weight, TR, 1 in, Die R100N, 7000045104
3M 77559, Cubitron II Hookit Cloth Disc 784F, 77559, 36+ to 120+, 5 in x NH, Die 500X, 7100232738
3M 45714, Cubitron II Hookit Cloth Disc 947A, 120+ X-weight, 3 in x NH, D/F 3HL, Die 300BE, 7100113113
Standard Abrasives 730099, Ceramic Full Taper Cartridge Roll, 1/2 in x 1-1/2 in x 1/8 in 60, 7100102856
3M 43061, Aura Particulate Respirator 9205+, N95, 7100232940, 440 ea/Case
3M 31668, Cubitron II Net Disc Roll, 180+, 5 in, 7100250172, 50 Discs/Roll
Standard Abrasives 705036, A/O Straight Cartridge Roll, 3/8 in x 1-1/2 in x 1/8 in 80, 7100085860
Standard Abrasives 840031, Quick Change Surface Conditioning FE Disc, A/O Coarse, TSM, Brown, 3/4 in, QS75KM, 7000046845, 50/case
3M 22404, Roloc Disc 361F, 80 YF-weight, TR, 3 in, Die R300V, 7000045100
Dynabrade 79493 4-1/4" Dia. x 2" W x 5/8"-11 Center Thread, Coarse, DynaBrite Surface Conditioned Flap Roll
3M 33349, 641WY 1/4" X 24", 220 Mesh Diamond Cloth Belt, 7010534919
3M 34672, 641WY, 1/2" X 64", 100 Mesh, Diamond Cloth Belts 7100111364
3M 77558, Cubitron II Hookit Cloth Disc 947A, 77558, 40+ to 120+, 6 in x NH, Die 600Z, 7100232737
3M 22392, Roloc Disc 361F, 24 YF-weight, TR, 3 in, Die R300V, 7000045090
3M 31685, Cubitron II Net Disc Roll, 320+, 3 in, 7100248985, 50 Discs/Roll
3M 28830, 675L, 1/2" X 72", 74u, Diamond Microfinishing Film Belt 7010508919
Standard Abrasives 710928, A/O Full Taper Cartridge Roll, 1/2 in x 1-1/2 in x 1/8 in 80, 7100085871
Standard Abrasives 722809, PSA A/O Extra Disc, 5 in x NH, 60, 7010368721
3M 27381, Cross Pad 341D, 3 in x 3 in x 1 in, 80 X-weight, 7100094562
3M 62605, Scotch-Weld Threadlocker TL42, Blue, 10 mL Bottle, 7100039190, 10/case
3M 76750, Roloc Disc 777F, 60 YF-weight, TS, 2 in, Die RS200P, 7010299188
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
3M 01328, PSA Cloth Disc 348D, P180 X-weight, 3 in x NH, Die 300V, 7000045068
Standard Abrasives 700307, A/O Cross Pad, 8 PLY, 2 in x 2 in x 1/2 in, 8-32, 100, 7100105468
3M 28817, STIKIT LOW PROFILE DISC PAD, EXTRA FIRM, 5 IN X 3/8 IN X 5/16 IN, 24 EXTERNAL, 7010361145
3M 16831, Urethane Seam Sealer, 08361, Gray, 310 mL Foil Pack, 7000120461, 6 per case
3M 94543, SecureFit Full Brim Hard Hat H-808SFV-UV, Grey, Vented, 4-Point Pressure Diffusion Ratchet Suspension with UVicator, 20ea/CS, 7100239989
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
3M 32518, Cloth Belt 341D, P120 X-weight, 9 in x 48 in, Film-lok, Single-flex, 7010307962, 20 per case
3M 26557, Cloth Belt 341D, P180 X-weight, 2 in x 48 in, Film-lok, Single-flex, 7010307963, 50 per case
3M 22408, Roloc Disc 361F, P100 YF-weight, TR, 1-1/2 in, Die R150S, 7000045101
3M 77930, Cloth Belt 707E, 80 JE-weight, 3 in x 132 in, Film-lok, Single-flex, 7010299929, 50 per case
3M 50804, Cloth Belt 970DZ, 80 Y-weight, 4 in x 132 in, Film-lok, Single-flex, 7010308041, 25 per case
3M 26562, Cloth Belt 341D, 80 X-weight, 2 in x 48 in, Film-lok, Single-flex, 7000118793, 50 per case
3M 22409, Roloc Disc 361F, P120 XF-weight, TR, 1-1/2 in, Die R150S, 7000045103
3M 20932, PSA Cloth Disc 348D, 80 X-weight, 1 in x NH, Die 100N, 7000118914
3M 87103, Cloth Belt 341D, 24 X-weight, 9 in x 20 in, Fabri-lok, Single-flex, 7010326200, 20 per case
3M 26054, PPS Series 2.0 Adapter, Type S18, 3/8 Female, 18 Thread NPS,
4 per case
3M 77197, Scotch-Brite™ Roloc™ Deburr and Finish PRO Unitized Wheel,TR, 3 in x 1/8 in x NH, 8C CRS+, 7100109130, 40/box
3M 27359, Cloth Belt 970DZ, 24 YN-weight, 25 in x 75 in, Film-lok, Single-flex, 7010361224, 2 per case
3M 76531, Cloth Belt 777F, 36 YF-weight, 2 in x 72 in, Film-lok, Single-flex, 7000148136, 50 per case
3M™ 17379, Versaflo™ Length Adjusting Breathing Tube BT-30, 7100009685, 1 EA/Case 
