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 6130-01-310-2906
NSN 6220-00-034-7280
NSN 5950-01-217-9036
NSN 2925-00-902-3881
NSN 7035-00-007-7023
NSN 6620-00-543-2534
NSN 5915-01-415-3520
NSN 5998-00-464-1199
NSN 5950-00-273-9604
NSN 5985-01-408-6244
NSN 6220-01-575-2837
NSN 5835-01-242-9806