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National Stock Number:
5330-00-352-0501
Federal Supply Class:
5330
National Item Identification Number:
003520501
Description:
PACKING,PREFORMED
Detail:
A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see WASHER (as modified) and GASKET. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see SEAL, NONMETALLIC ANGLE; SEAL, NONMETALLIC CHANNEL; and SEAL, NONMETALLIC, SPECIAL SHAPED SECTION. For circular (with aperature) nonmetallic items with a solid round cross-section see O-RING. Excludes CUP, COMPRESSION; GASKET; WASHER (as modified); and FELT, MECHANICAL, PREFORMED.
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Manufacturer Information:
| ST7M349-7 | 75345 | KIRKHILL, INC. | | ST7M349-7 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| CENTER HOLE DIAMETER | 1.984 INCHES MINIMUM AND 2.016 INCHES MAXIMUM | | CROSS-SECTIONAL SHAPE STYLE | SPECIAL | | CROSS-SECTIONAL HEIGHT | 0.680 INCHES NOMINAL | | HARDNESS RATING | 45.0 SHORE DUROMETER A MINIMUM AND 55.0 SHORE DUROMETER A MAXIMUM OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | ZZ-R-765,CL 3,GR 50 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | RUBBER SILICONE CLASS Q OVERALL | | PERIPHERAL DIAMETER | 2.750 INCHES NOMINAL | | TEMP RATING | -80.0 FAHRENHEIT AND 450.0 FAHRENHEIT |
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