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 5935-00-864-2951
NSN 5999-01-158-7233
NSN 6685-00-930-2771
NSN 5975-00-577-3765
NSN 5925-00-255-2048
NSN 5950-01-065-0858
NSN 6145-00-405-2737
NSN 5960-00-139-3204
NSN 6145-01-188-2789
NSN 6320-01-495-0512
NSN 5905-00-400-2978
NSN 6685-01-647-5812