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 5985-00-815-2900
NSN 5855-00-832-9341
NSN 5945-01-339-6784
NSN 6110-00-476-0993
NSN 5905-00-850-3639
NSN 5996-01-071-4828
NSN 5855-01-406-6261
NSN 5996-01-323-7419
NSN 5925-01-261-4215
NSN 6685-00-153-0266
NSN 5945-01-212-1455
NSN 6685-01-627-7516