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 5965-01-142-8044
NSN 6105-01-412-2049
NSN 4140-00-026-5437
NSN 2925-01-280-1911
NSN 5835-01-286-6499
NSN 5945-00-158-4753
NSN 5975-01-550-4090
NSN 5905-01-208-7954
NSN 6685-00-287-7564
NSN 2925-00-468-5273
NSN 5975-01-244-7577
NSN 5985-01-634-0635