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 5996-01-069-0455
NSN 5935-01-416-9328
NSN 7035-00-020-2227
NSN 6130-00-643-4894
NSN 5925-00-027-8220
NSN 5950-01-168-0174
NSN 5925-00-253-5137
NSN 6135-00-539-8088
NSN 6320-01-441-2438
NSN 6145-01-442-1656
NSN 7035-00-887-4674
NSN 5985-01-208-6571