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 6645-01-396-6976
NSN 5990-01-065-0492
NSN 5935-00-153-3130
NSN 6620-01-576-7723
NSN 6685-01-364-0280
NSN 6685-01-469-9294
NSN 5996-01-008-7445
NSN 2925-01-487-0886
NSN 5998-01-170-0336
NSN 6610-00-288-5655
NSN 5925-00-814-8428
NSN 7035-01-633-9537