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 5905-01-026-2411
NSN 5920-01-301-3837
NSN 6620-01-451-1168
NSN 6105-01-455-4264
NSN 6685-00-984-6096
NSN 5975-01-385-8039
NSN 5950-00-099-9612
NSN 5950-01-103-0922
NSN 5985-00-899-6164
NSN 5990-01-485-0260
NSN 6240-01-242-9138
NSN 2925-01-139-5144