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 5965-01-104-6277
NSN 5920-00-175-7987
NSN 6650-00-499-2802
NSN 7035-01-475-7837
NSN 4140-00-248-6089
NSN 5975-00-210-4652
NSN 4140-01-633-9966
NSN 5945-01-168-1004
NSN 6320-01-036-2598
NSN 2925-01-123-5856
NSN 6685-00-215-0557
NSN 5996-01-428-2807