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 7035-00-406-0568
NSN 5925-00-462-9164
NSN 6645-01-332-7824
NSN 5925-01-076-6378
NSN 6645-00-445-8143
NSN 5985-01-495-5478
NSN 6645-01-648-4439
NSN 5935-01-496-2144
NSN 5990-01-357-6175
NSN 5965-01-100-3878
NSN 5950-01-016-0866
NSN 6220-00-536-5738