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 6150-01-412-1123
NSN 6685-00-209-4400
NSN 6135-01-476-4697
NSN 2925-00-290-7052
NSN 5855-01-312-5160
NSN 5925-01-060-5265
NSN 5998-00-414-1181
NSN 6240-01-475-5554
NSN 6650-01-364-1313
NSN 6135-01-252-0315
NSN 5999-01-587-4347
NSN 6110-00-939-7065