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 5965-00-564-4399
NSN 5855-01-373-7538
NSN 6110-01-046-6637
NSN 6220-01-044-5552
NSN 6105-01-574-2906
NSN 5965-01-463-8176
NSN 2925-00-139-8309
NSN 5996-01-477-4143
NSN 6645-00-574-9712
NSN 6145-01-023-7719
NSN 5996-00-752-4317
NSN 5920-00-895-3270