The Ring Set,piston, cataloged under National Stock Number 2990-01-213-1023, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Haldex Brake Products Corporation. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2990-01-213-1023 |
| Primary Part Number | RNT-26-JE |
| Item Name | Ring Set,piston |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Haldex Brake Products Corporation |
| Status | ACTIVE |
| Ring Set Component Parts | COMPRESSION RING,102382-B,06721,3; OIL RING SIDERAIL,102383-D,06721,2; OIL RING EXPANDER,102384-C,06721,1; ENVELOPE,45-X-241,06721,1; ENVELOPE,45-X-242,06721,1 |
| Piston Accommodation Quantity | 1 |
| Standard Bore Diameter | 3.150 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| RNT-26-JE PRIMARY | Haldex Brake Products Corporation (USA) |
| Reference | Meaning |
|---|---|
| RN-26-JE | 5/9 Secondary reference Haldex Brake Products Corporation |
NSN 2990-01-213-1023 is a Ring Set,piston, manufactured by Haldex Brake Products Corporation, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-213-1023 has 1 manufacturer part number on file: RNT-26-JE (Haldex Brake Products Corporation).
Key specifications for RNT-26-JE: Ring Set Component Parts: COMPRESSION RING,102382-B,06721,3; OIL RING SIDERAIL,102383-D,06721,2; OIL RING EXPANDER,102384-C,06721,1; ENVELOPE,45-X-241,06721,1; ENVELOPE,45-X-242,06721,1; Piston Accommodation Quantity: 1; Standard Bore Diameter: 3.150 INCHES IN; End Item Identification: EAGLE BOB TAIL TRACTORS INC,AIRCRAFT TOWING TRACTOR MODEL MB-4. 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.