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 5925-01-373-0518
NSN 6150-00-338-3674
NSN 5985-01-449-0825
NSN 4140-01-441-2339
NSN 6685-00-123-1926
NSN 6620-00-406-5906
NSN 5960-01-167-8796
NSN 5945-01-257-4661
NSN 6620-00-299-2530
NSN 6320-00-216-8779
NSN 5905-00-148-5162
NSN 6150-00-071-1180