# DIBBS #SPE7M2-27-T-0278

DLA request for seven drawing-specified preformed back-up rings

**Posted:** October 21, 2026
**Respond By:** November 02, 2026
**Identifier:** SPE7M2-27-T-0278
**NAICS:** 339991

The Defense Logistics Agency is seeking seven drawing-specified preformed back-up rings for its Nuclear Reactor Program.
- **Government buyer:** Defense Logistics Agency (DLA), DLA Weapons Support, Nuclear Reactor Program; notice contact: David Larsen. The opportunity was posted through DLA’s DIBBS procurement portal.
- **Requested item:** 7 preformed back-up rings, NSN 5330-01-717-6445 (CLIN 0001; part number 5330017176445). No OEM, vendor, or approved source is named.
- **Technical requirements:** The part is identified as a critical application item and must conform to the referenced technical data and drawings: TDP Rev A Gen 3, basic drawing 43689 A1B PPPA SK-028, and reference drawing 53711 T9074-BD-GIB-010/0300, Revision 2. Access to export-controlled technical data requires approval.
- **Delivery and acceptance:** Delivery is FOB Origin, with inspection and acceptance at the DLA Distribution facility in New Cumberland. Delivery is required 166 days after order.

### Description

BACK-UP RING, PREFORMED (QTY: 7, NSN: 5330-01-717-6445, Purchase Request: 7018795976)

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE7M227T0278)