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 5999-00-529-0157
NSN 5975-00-548-7818
NSN 5945-00-940-7062
NSN 6240-01-510-9299
NSN 5895-01-503-8110
NSN 6110-01-514-0271
NSN 5950-01-152-1271
NSN 5920-01-442-7685
NSN 2925-01-471-4912
NSN 6130-01-086-8897
NSN 6320-01-406-6098
NSN 5855-00-361-0167