Gasketing tape

The Ultimate Sponge Rubber Weatherstrip

DORTITE Weather Strip Sponges

Original DORTITE gasketing tape, made in the United States, is constructed of natural open-cell sponge rubber, combined with a non-stretch backing and a very aggressive rubber-based adhesive.

Colors: Black


DORTITE gasketing tape is commonly used in HVAC and air filtration to minimize vibration, and off-highway equipment door seals. Ideal for weather stripping, sound and vibration dampening, cushioning, dust proofing and insulation. Uses: RV’s and Auto’s (Automotive).

DORTITE Gasketing Tape and WeatherstrippingFeatures and Benefits

  • Meets ASTM 1056-68 RO12
  • Non-stretch
  • Easy-to-use versatility
  • Excellent memory to retain shape
  • Long product life
  • Thicknesses: 1/8″ (3.175 mm), 3/16″ (4.763 mm), 1/4″ (6.35 mm), 5/16″ (7.874 mm), 3/8″ (9.652 mm), 7/16″ (11.176 mm) and 9/16″ (14.224 mm)
  • Rolls: 25′ (7.62 m) and 50′ (15.24 m)
  • Widths: 1/4″ (6.35 mm) to 40″ (1,062 mm)
  • Temperature Range: 20° – 200°F (-28° – 93°C)

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DORTITE and DORTITE XTRA is Certified by:

DORTITE Quality Certifications

Manufactured in the United States by DSI.