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 5925-01-015-4356
NSN 5915-01-279-0332
NSN 6135-01-374-6631
NSN 6110-01-116-7772
NSN 5925-00-556-5666
NSN 7035-01-619-5073
NSN 5895-00-990-3688
NSN 6240-00-702-9068
NSN 6135-00-539-8088
NSN 5960-00-793-4397
NSN 6110-01-491-2158
NSN 5990-01-455-2919