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 6150-00-272-6837
NSN 5930-01-375-2633
NSN 6150-01-421-2543
NSN 7035-01-056-5350
NSN 6105-00-248-5772
NSN 5910-01-033-6073
NSN 5855-00-089-3974
NSN 6645-00-472-4048
NSN 5950-01-536-9375
NSN 5990-00-229-4647
NSN 5975-00-868-4456
NSN 5930-00-257-5758