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 5985-00-932-4257
NSN 5985-01-305-8913
NSN 2925-00-532-1481
NSN 6320-01-006-6138
NSN 5990-00-110-1153
NSN 6240-00-734-3276
NSN 7035-00-135-4758
NSN 6135-01-313-1948
NSN 6220-01-310-7166
NSN 5965-00-156-8562
NSN 5895-01-497-3280
NSN 6610-00-782-0761