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 6610-01-508-3125
NSN 5930-00-540-0900
NSN 4140-01-245-8866
NSN 5930-01-425-2296
NSN 6685-01-412-9122
NSN 5925-00-554-4114
NSN 6320-00-270-8222
NSN 5985-01-634-0635
NSN 5920-01-087-6073
NSN 6145-00-113-3911
NSN 5975-00-226-8429
NSN 5985-00-935-8653