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
NSN 6110-01-476-3503
NSN 5965-01-019-0939
NSN 5905-01-413-0055
NSN 6610-00-248-1559
NSN 6130-01-415-2870
NSN 6685-00-877-6588
NSN 5855-00-436-3852
NSN 5985-01-069-1120
NSN 5999-01-020-6852
NSN 6620-01-332-2797
NSN 6610-01-614-3720