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 5998-00-141-9872
NSN 5920-01-358-6930
NSN 6240-01-525-4976
NSN 6685-00-248-4016
NSN 6610-01-371-3006
NSN 6105-01-038-4084
NSN 5905-01-033-2200
NSN 5925-00-027-8220
NSN 5990-01-449-7090
NSN 6150-00-554-7591
NSN 5975-00-006-5248
NSN 6610-01-206-0703