The Ring,piston, cataloged under National Stock Number 4310-01-267-8642, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Cascade Corp. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-267-8642 |
| Primary Part Number | C638250 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Cascade Corp |
| Status | ACTIVE |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Ring Style | CONCENTRIC |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4310-01-267-8642 is a Ring,piston, manufactured by Cascade Corp, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-267-8642 has 2 manufacturer part numbers on file: 638250 (Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling), C638250 (Cascade Corp).
Key specifications for C638250: Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Ring Style: CONCENTRIC; End Item Identification: 3930-01-172-7891; Material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.