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 5925-01-214-0438
NSN 5975-01-101-1141
NSN 6620-01-456-0529
NSN 5855-01-147-4785
NSN 5960-00-583-0456
NSN 5950-01-247-8391
NSN 5855-01-352-7033
NSN 6110-01-572-2541
NSN 6645-00-551-8291
NSN 6150-01-534-7883
NSN 6240-01-476-7357
NSN 6150-01-406-5400