| Size | NW50 / NW-50-CR-SV Repeated in titles. |
|---|---|
| Materials | SST304 and Viton O-ring mentioned Stainless steel and Viton appear frequently; verify for exact unit. |
| Cross references | MDC 710003, Edwards C10517395, Varian 800-0350, MKS 100312706 mentioned Possible equivalents/cross-references should be verified. |
A centering ring seal assembly centers and seals an NW/KF vacuum flange connection using an O-ring and metal support ring.
Correct flange size, elastomer material, and metal material are necessary for vacuum sealing and chemical compatibility.
304 stainless steel is commonly used in vacuum fittings.
Viton is a fluoroelastomer used for many vacuum O-rings.
Product reference only. Confirm fitment, revision, included components, and specifications before purchase.
No public documents were listed for this part when captured.
Prices and availability may change. Confirm details with the seller.
Observed public listing price, not an accepted sale amount.
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View on eBay0 matching listings.
No active-status direct listings are shown on this page.
Auction listing history. Direct marketplace listings are shown separately.
| Currency | Price basis | Records | Minimum | Maximum | Mean |
|---|---|---|---|---|---|
| USD | Observed public listing prices | 12 | 15.0000 | 150.0000 | 37.8958333333333333 |
Amounts without an established currency are retained in the history below and excluded from monetary comparisons. Bids, public listing prices and accepted amounts are distinct; no currency conversion is applied.
| Time recorded | Listing | Observation | Public price | Recorded acceptance |
|---|---|---|---|---|
| Feb 9, 2026 16:39 UTC | Applied Materials 3700-01088 Seal CTR Ring Assy NW50 W/Viton Oring SST304 | Completed listing price | 9.99 (currency not captured) | Not established |
| Dec 1, 2025 04:37 UTC | AMAT 3700-01088 Seal Center Ring Assy NW50 O-Ring STAINLESS | Completed listing price | 5 (currency not captured) | Not established |
| Sep 22, 2025 19:48 UTC | LOT of (500) AMAT 3700-01088 Seal Center Ring Assy NW50 O-Ring STAINLESS | Completed listing price | 449.95 (currency not captured) | Not established |
| Jan 9, 2025 20:04 UTC | Seal MKS 100312706 Applied Materials (AMAT) 3700-01088 SEAL,CTRING NW50,S/V | Completed listing price | 6.05 (currency not captured) | Not established |
| Sep 30, 2024 11:33 UTC | Applied Materials AMAT 3700-01088 MDC 710003 Edwards C10517395 NW-50-CR-SV | Completed listing price | 17.95 (currency not captured) | Not established |
| Nov 5, 2023 03:31 UTC | MDC 3700-01088 Gasket Centering Ring Seal Stainless Steel NW-50-CR-SV | Completed listing price | 9.5 (currency not captured) | Not established |
| Dec 27, 2022 10:15 UTC | MDC 3700-01088 Gasket Centering Ring Seal Stainless Steel NW-50-CR-SV | Completed listing price | 9.99 (currency not captured) | Not established |
| Oct 30, 2022 16:03 UTC | MDC 3700-01088 Gasket Centering Ring Seal Stainless Steel NW-50-CR-SV | Completed listing price | 9.99 (currency not captured) | Not established |
| Oct 15, 2022 21:23 UTC | MDC 3700-01088 Gasket Centering Ring Seal Stainless Steel NW-50-CR-SV | Completed listing price | 9.99 (currency not captured) | Not established |
| Sep 9, 2022 01:02 UTC | AMAT 3700-01088 Seal CTR Ring Assembly NW50, O-Ring, SST304, 452212 | Completed listing price | 15 (currency not captured) | Not established |
| Aug 12, 2022 02:11 UTC | 16234 APPLIED MATERIALS SEAL CTR RING ASSY NW50 W/VITON ORING S (NEW) 3700-01088 | Completed listing price | 16.76 (currency not captured) | Not established |
| Nov 2, 2021 04:58 UTC | AMAT 3700-01088 Seal CTR Ring Assembly NW50, W/Viton O-Ring, SST304, 452212 | Completed listing price | 15 (currency not captured) | Not established |
| Dec 22, 2020 19:33 UTC | AMAT 3700-01088 Seal Center Ring Assembly NW50 w/viton Oring, 422188 | Completed listing price | 15 (currency not captured) | Not established |
| Aug 14, 2020 04:29 UTC | Applied Materials AMAT 3700-01088 MDC 710003 Edwards C10517395 NW-50-CR-SV | Completed listing price | 11.95 (currency not captured) | Not established |
| Aug 13, 2020 13:43 UTC | Applied Materials (AMAT) 3700-01088 SEAL CTR RING ASSY NW50 W/VITON ORING S | Completed listing price | 10.95 (currency not captured) | Not established |
| Dec 1, 2019 09:09 UTC | Applied Materials 3700-01088 SEAL CTR RING ASSY NW50 W/VITON ORING SST304 | Completed listing price | 35 (currency not captured) | Not established |
| Jan 29, 2019 20:55 UTC | Applied Materials 3700-01088 Seal CTR Ring Assy NW50 W/Viton Oring SST304 | Completed listing price | 9.99 (currency not captured) | Not established |
| Dec 27, 2018 03:18 UTC | Applied Materials 3700-01088 Seal CTR Ring Assy NW50 W/Viton Oring SST304 | Completed listing price | 9.99 (currency not captured) | Not established |
| Nov 23, 2018 15:43 UTC | Applied Materials 3700-01088 Seal CTR Ring Assy NW50 W/Viton Oring SST304 | Completed listing price | 9.99 (currency not captured) | Not established |
| Oct 23, 2018 20:11 UTC | Applied Materials 3700-01088 Seal CTR Ring Assy NW50 W/Viton Oring SST304 | Completed listing price | 9.99 (currency not captured) | Not established |
| Sep 22, 2018 22:05 UTC | Applied Materials 3700-01088 Seal CTR Ring Assy NW50 W/Viton Oring SST304 | Completed listing price | 9.99 (currency not captured) | Not established |
| Aug 24, 2018 12:19 UTC | Applied Materials (AMAT) 3700-01088 Varian 800-0350 Centering Ring Assembly, NW | Completed listing price | 3.95 (currency not captured) | Not established |
| Jan 2, 2018 16:31 UTC | Applied Materials 3700-01088 Seal CRT Ring ASSY NW50 W/Viton Oring SST304 | Completed listing price | 50 (currency not captured) | Not established |
| Jan 2, 2018 15:41 UTC | Applied Materials 3700-01088 Seal Center Ring Assembly NW50 with Viton O-Ring | Completed listing price | 32 (currency not captured) | Not established |
| Jan 2, 2018 15:37 UTC | Applied Materials 3700-01088 Seal Center Ring Assembly NW50 with Viton O-Ring | Completed listing price | 20 (currency not captured) | Not established |
| Dec 19, 2017 23:20 UTC | Applied Materials 3700-01088 Seal CRT Ring ASSY NW50 W/Viton Oring SST304 | Completed listing price | 50 (currency not captured) | Not established |
| Mar 11, 2014 16:20 UTC | APPLIED MATERIALS 3700-01088 SEAL CTR RING ASSY NW50 W/VITON ORING SST304 | Completed listing price | 30 (currency not captured) | Not established |
| Jan 8, 2014 17:09 UTC | APPLIED MATERIALS 3700-01088 SEAL CTR RING ASSY NW50 W/VITON ORING SST304 | Completed listing price | 30 (currency not captured) | Not established |
| Dec 8, 2013 00:44 UTC | APPLIED MATERIALS 3700-01088 SEAL CTR RING ASSY NW50 W/VITON ORING SST304 | Completed listing price | 30 (currency not captured) | Not established |
| Apr 8, 2013 20:54 UTC | AMAT 3700-01088 SEAL CTR RING ASSY NW50 W/ VITON ORING SST304 | Completed listing price | 9 (currency not captured) | Not established |
Public listing prices, direct recorded sale prices and recorded accepted Best Offer amounts remain distinct. Quantities are source estimates. No aggregate sales total or average is inferred.
Prices and availability may change. Confirm details with the seller.
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