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 5975-01-320-8198
NSN 5945-01-439-8576
NSN 6685-01-344-2998
NSN 6135-01-026-9960
NSN 5996-01-569-2392
NSN 5999-00-138-9614
NSN 5895-00-030-8814
NSN 6685-01-536-9705
NSN 5835-01-328-6626
NSN 5999-01-442-3170
NSN 6130-00-857-0904
NSN 5905-01-108-1793