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 5965-01-150-1920
NSN 5945-01-100-3654
NSN 5996-01-286-4935
NSN 6240-01-401-5340
NSN 5915-01-236-9454
NSN 5990-01-360-2900
NSN 5945-01-168-4414
NSN 6320-01-147-9177
NSN 5990-01-480-9938
NSN 5985-01-472-3360
NSN 2925-01-027-1293
NSN 6220-00-466-2681