Form This specification establishes the requirements for an expanded polytetrafluoroethylene (EPTFE) in the form of sealing tape@ gaskets@ or sheets requiring no mixing or curing. Application Classes 1@ 2@ 3@ and 4 sealing tapes have been used typically for sealing aircraft access panels@ pressure barriers@ and mold line surface close-out panels where gaskets are required. Class 5 sealants have been used for sealing aircraft fuel access panels@ fuel pressure barriers@ and mold line surface close-out panels where sealants with resistance to continuous exposure to fuel is required. For all classes@ usage is not limited to applications identified. Classification Sealing tapes are classified as follows: Class 1: Continuous@ Ribbed Type 1: Standard Sealant Tape Form 1: 0.012 inch (0.3 mm) thick with large bulb 0.091 inch (2.3 mm) thick and small bulbs 0.035 inch (0.9 mm) thick Form 2: 0.020 inch (0.5 mm) thick with large bulb 0.098 inch (2.5 mm) thick and small bulbs 0.047 inch (1.2 mm) thick Form 3: 0.051 inch (1.3 mm) thick with large bulb 0.126 inch (3.2 mm) thick and small bulbs 0.067 inch (1.7 mm) thick Form 4: 0.059 inch (1.5 mm) thick with large bulb 0.138 inch (3.5 mm) thick and small bulbs 0.087 inch (2.2 mm) thick Form 5: 0.012 inch (0.3 mm) thick with large bulb 0.091 inch (2.3 mm) thick and no small bulbs Form 6: 0.020 inch (0.5 mm) thick with large bulb 0.098 inch (2.5 mm) thick and no small bulbs Form 7: 0.051 inch (1.3 mm) thick with large bulb 0.126 inch (3.2 mm) thick and no small bulbs Form 8: 0.059 inch (1.5 mm) thick with large bulb 0.138 inch (3.5 mm) thick and no small bulbs Form 9: 0.012 inch (0.3 mm) thick with no large bulb and small bulbs 0.035 inch (0.9 mm) thick Form 10: 0.020 inch (0.5 mm) thick with no large bulb and small bulbs 0.047 inch (1.2 mm) thick Form 11: 0.051 inch (1.3 mm) thick with no large bulb and small bulbs 0.067 inch (1.7 mm) thick Form 12: 0.059 inch (1.5 mm) thick with no large bulb and small bulbs 0.087 inch (2.2 mm) thick Class 2: Continuous@ Non-Ribbed Type 1: Standard Strength Sealant Tape Form 1: 0.012 inch (0.3 mm) thick Form 2: 0.020 inch (0.5 mm) thick Form 3: 0.039 inch (1.0 mm) thick Form 4: 0.065 inch (1.65 mm) thick Form 5: 0.079 inch (2.0 mm) thick Form 6: 0.126 inch (3.2 mm) thick Type 2: High Strength Sealant Tape Form 1: 0.012 inch (0.3 mm) thick Form 2: 0.020 inch (0.5 mm) thick Form 3: 0.031 inch (0.8 mm) thick Form 4: 0.039 inch (1.0 mm) thick Form 5: 0.059 inch (1.5 mm) thick Form 6: 0.024 inch (0.6 mm) thick Class 3: Continuous@ Non-Ribbed Moldable Type 1: Standard Sealant Tape Form 1: 0.05 inch (1.3 mm) thick x 0.15 inch (3.8 mm) wide Form 2: 0.07 inch (1.8 mm) thick x 0.25 inch (6.4 mm) wide Form 3: 0.09 inch (2.3 mm) thick x 0.32 inch (8.1 mm) wide Form 4: 0.12 inch (3.0 mm) thick x 0.46 inch (11.7 mm) wide Form 5: 0.21 inch (5.3 mm) thick x 0.59 inch (15 mm) wide Form 6: 0.24 inch (6.1 mm) thick x 0.72 inch (18.3 mm) wide Form 7: 0.30 inch (7.6 mm) thick x 0.81 inch (20.6 mm) wide Form 8: 0.37 inch (9.4 mm) thick x 1.03 inches (26.2 mm) wide Class 4: Gasket Material Type 1: Standard Strength Gasket Material Form 1: 0.020 inch (0.5 mm) thick Form 2: 0.039 inch (1.0 mm) thick Form 3: 0.062 inch (1.6 mm) thick Form 4: 0.079 inch (2.0 mm) thick Form 5: 0.126 inch (3.2 mm) thick Grade 1: Sheet Material up to 80 x 80 inches (2032 x 2032 mm) Grade 2: Die Cut Gasket up to 80 x 80 inches (2032 x 2032 mm) Type 2: High Strength Gasket Material Form 1: 0.012 inch (0.3 mm) thick Form 2: 0.020 inch (0.5 mm) thick Form 3: 0.031 inch (0.8 mm) thick Form 4: 0.039 inch (1.0 mm) thick Form 5: 0.059 inch (1.5 mm) thick Form 6: 0.024 inch (0.6 mm) thick Grade 1: Sheet Material up to 18 x 80 inches (457 x 2032 mm) Grade 2: Die Cut Gasket up to 18 x 80 inches (457 x 2032 mm) Class 5: Fuel Resistant Sealant Type 1: Standard Temperature@ 194 ??(90 ??@ Fuel Resistant Sealant Form 1: 0.020 inch (0.5 mm) thick Form 2: 0.031 inch (0.8 mm) thick Form 3: 0.039 inch (1.0 mm) thick Form 4: 0.059 inch (1.5 mm) thick Grade 1: Sheet Material up to 80 x 80 inches (2032 x 2032 mm) Grade 2: Die Cut Gasket up to 80 x 80 inches (2032 x 2032 mm) Type 2: High Temperature@ 356 ??(180 ??@ Fuel Resistant Sealant Form 1: 250 to 500 g/m2 Form 2: 500 to 750 g/m2 Form 3: 750 to 1000 g/m2 Form 4: 1000 to 1500 g/m2 Grade 1: Sheet Material up to 17.7 x 78.7 inches (450 x 2000 mm) Grade 2: Die Cut Gasket up to 17.7 x 78.7 inches (450 x 2000 mm) Grade 3: Continuous Non-ribbed Tape Safety - Hazardous Materials Shall be in accordance with AS5502 (1.1).