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 6645-00-222-2785
NSN 2925-01-565-6410
NSN 6135-01-201-5858
NSN 5996-00-135-1548
NSN 6610-01-555-8791
NSN 5975-00-577-3765
NSN 5930-01-084-9515
NSN 5895-00-805-2394
NSN 6685-00-418-2973
NSN 6110-00-453-8971
NSN 6320-01-177-3192
NSN 6150-00-804-6728