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 5835-00-148-9719
NSN 5990-01-453-3552
NSN 6685-01-067-8474
NSN 6610-00-211-9095
NSN 6105-00-925-2226
NSN 5985-01-376-2659
NSN 6150-00-100-1302
NSN 6105-01-139-3624
NSN 5996-01-628-2435
NSN 5925-01-153-0144
NSN 5996-00-943-3025
NSN 6240-00-727-8573