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 6320-01-150-5378
NSN 7035-01-183-7550
NSN 5835-01-645-2892
NSN 5895-01-129-5291
NSN 5920-00-462-7136
NSN 5835-01-391-4556
NSN 5975-01-275-1228
NSN 5999-01-570-9939
NSN 5965-00-543-1837
NSN 5920-01-512-4124
NSN 5920-01-620-8490
NSN 5835-01-286-6499