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 5915-01-107-1978
NSN 5985-01-185-7706
NSN 5835-00-145-3786
NSN 5999-01-633-0365
NSN 6685-01-264-0093
NSN 6645-01-516-3739
NSN 5905-01-451-4012
NSN 6135-01-026-9960
NSN 6685-01-167-5812
NSN 6645-01-234-5555
NSN 5999-00-279-1280
NSN 5985-00-226-5627