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 6105-01-407-8697
NSN 5905-01-446-4017
NSN 5996-01-106-8903
NSN 5996-01-415-3098
NSN 5998-01-592-5408
NSN 6685-01-356-2196
NSN 5835-01-629-2044
NSN 5990-00-341-3194
NSN 5945-00-754-3722
NSN 5990-01-553-6859
NSN 6620-00-542-0529
NSN 6620-01-555-1453