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 6320-01-195-5583
NSN 5998-01-007-0738
NSN 5935-00-728-6525
NSN 6610-00-593-4935
NSN 5985-00-951-5289
NSN 6135-01-359-4293
NSN 6685-01-385-5901
NSN 5950-00-846-1339
NSN 4140-01-314-2862
NSN 5835-01-104-4520
NSN 5998-01-113-8236
NSN 5905-01-232-8206