Pres-On P8300 Series Neoprene / EPDM / SBR Closed Cell Foam Tapes are specification grade, firm density, black, closed cell Neoprene/EPDM/SBR blend tapes featuring a high-tack, rubber based, pressure sensitive adhesive (PSA) on one side with easy-to-use release liner.


Products Details

  • Tech Specs
  • Product Highlights
  • Applications
  • Available Options

Standard Roll SizesSerial NumberThinknessLength
P8300 is 54 inches wideP83061/16"100'
Adhesion PropertiesTestTypical PerformanceTest Method
High-tack pressure sensitive rubber based adhesive. One sided with release liner.Loop Tack115 oz/in typicalTLM1 LIB1
Adhesion to Steel @ 72°F
- Steel immediate7 lbs/inch width or foam tearPSTC-1
- Steel after 24 hours8 lbs/inch width or foam tearPSTC-1
Static Shear @ 72°F 1 x 1 x 500 grams1000 hours minimumPSTC-7
Static Shear @ 72°F 1 x 1 x 1000 grams200 hours minimumPSTC-7
Optimum Application Temperature50°F - 80°FPres-On PTM-2
Functional Temperature0°F - 140°FPres-On PTM-2
Shelf Life1 year stored at room temperature
Physical PropertiesPropertyTest MethodUnits of MeasureResults
Density (PCF)ASTM D1056lbs/ft29 ± 2
ASTM-D-1056-67 & 68, Grade #----SCE 43
ASTM-D-1056-91 & 07 SAE J18-R7/92----2C3
Compression Set (25% Max)--Pass/FailPass
Compression Deflection (25%)ASTM D1056PSI 9 - 13
Water Absorption (by weight)ASTM D1056%5 (10 allowed)
Temperature Resistance--F-40F to +250F
Elongation (Min)ASTM D1056%150
Heat Aging (7 days @ 158°F, +30 max change)--Pass/FailPass
Tensile Strength (Min)ASTM D1056PSI100
Ozone (20% Stress 72hrs @ 100 PPHM)ASTM-D-1171-94**Pass/FailPass
Oil Resistance (7 days @ 74°F)Fluid Emmersion E1Pass/FailPass
Flammability (UL 94 HF1, FMVSS302)UL E208679Pass/FailPass
Flammability (Canada CAN/CSA C22.2#07-92)UL E208679Pass/FailPass
UL 50, UL 50E, UL 157, UL 508UL JMLU2, MH10200Pass/FailPass
*For temperature resistance lower and or higher than the above figures, please contact customer service. Under certain conditions, values greater than -40/+250 are possible.

  • Absorb shock and dampen sound and vibrations
  • Provide a tight, long-lasting seal against moisture, dust, and air leaks
  • Pass FMVSS302, CAN/CSA C22.2 #017-92, and UL 94 HF1 for flammability
  • Resist acids, alkali, ozone, and oxidation

P8300 Series Neoprene / EPDM / SBR Closed Cell Foam Tapes are general application tapes recommended for sealing roof curbs to A/C units, as well as sealing out rain, moisture, and dust. These watertight tapes also conform to irregular surfaces and are ideal for gasketing and weatherproofing windows and doors.

  • Roof Curb
  • Weather Stripping
  • Door Gasketing

 Application Notes

Ensure bonding surfaces are well unified, clean, dry and free of dirt and oils. Apply firm and even pressure to improve adhesive-to-surface contact. Allow proper temperature and time to enhance bond strength as adhesive flows onto the surface.

  • Release Liner: Brown Kraft Paper
  • Custom die-cut shapes
  • Also available with acrylic pressure sensitive adhesive on one-side (minimums may apply)