# SAM #PR518158

ORNL Request for Vacuum Linear Motion Feedthrough Assembly

**Buyer:** UT-Battelle
**Posted:** November 13, 2026
**Respond By:** November 20, 2026
**Identifier:** PR518158
**NAICS:** 423490, 333998, 333995

Oak Ridge National Laboratory is seeking a vacuum linear motion feedthrough assembly for a DOE-funded project.
- **Government buyer:** Oak Ridge National Laboratory (ORNL), Strategic Support, Contracts Division, Business Services Directorate. Contact: Brittanie Mack-Brewster.
- **Requested product:** **UHV Design** HLSM38 Series customized linear shift mechanism, or a domestic equivalent.
  - Requirements: CF40 (2 3/4-inch OD CF) flanges; metric clearance bolt holes on the fixed flange and metric tapped bolt holes on the travelling flange; 25 mm stroke; 38 mm clear bore; demountable bellows assembly; actuated VI.
- **Quantities and part numbers:** The RFQ lists one assembly, identified as HLSM38 Series. The bill of materials lists two mechanisms, part number HLSM38-30491-001. These quantities differ across the attachments.
- **Notable requirement:** Brand-name-or-equal applies; domestic equivalents are acceptable. Proposals are evaluated on lowest price among technically acceptable offers.
- **Period of performance:** To be determined.

### Description

<p>UT-Battelle, LLC. (the Company), is the Management and Operations Contractor for the Oak Ridge National Laboratory (ORNL), located in Oak Ridge, Tennessee. The Company seeks proposals for the Vacuum Linear Motion Feedthrough Assembly, or their domestic equivalents, to support a department of Energy (DOE) funded project.&nbsp;<br />
&nbsp;<br />
Request for Quotation - RFQ - PR518158, Vacuum Linear Motion Feedthrough Assembly<br />
Attachment A - Terms and Conditions - Purchase Order Commercial Products and Services, dated 09.30.2026<br />
Attachment B - Prime Flowdown Clauses, dated 09.30.2026<br />
Attachment C - Bill of Materials - PR518158<br />
Attachment D - Reps and Certs - Abbreviated - 03.09.2026<br />
&nbsp;<br />
FAR 52.211-6, Brand Name or Equal applies.</p>

[View original listing](https://sam.gov/opp/7865106856f84174b584c3c4bf6ddd5c/view)