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.
Classification: Gaskets,washers & other seals
NSN 5985-00-389-7389
NSN 5985-01-153-9430
NSN 5999-01-483-4198
NSN 5920-00-306-4872
NSN 6620-01-328-7059
NSN 7035-01-119-2234
NSN 6130-00-989-2332
NSN 6685-01-101-9005
NSN 5990-01-442-3520
NSN 7035-01-464-1213
NSN 5910-01-141-9401
NSN 6645-00-171-1883