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 7035-01-070-7015
NSN 5985-01-029-7543
NSN 2925-01-363-1805
NSN 6685-01-012-2854
NSN 5999-01-495-6813
NSN 6130-01-599-6816
NSN 6610-01-600-5789
NSN 5905-01-301-9840
NSN 5965-01-045-0247
NSN 5996-00-344-9459
NSN 4140-01-382-5778
NSN 5945-01-366-5389