| Supported description | Seal center/centering ring assembly |
|---|---|
| Flange size | NW25 |
| Seal material | Viton O-ring |
| Ring material | SST Stainless steel wording is supported by the evidence. |
| Linked vendor part | MKS HPS 100312703 Several records associate this AMAT part number with an MKS/HPS seal center ring. |
A centering ring assembly positions and seals NW/KF vacuum flange connections, typically using an elastomer O-ring supported by a metal ring.
The correct flange size, elastomer material, and metal material are required to maintain vacuum integrity and chemical compatibility.
Stainless steel.
A fluorocarbon elastomer commonly used for O-rings where chemical and temperature resistance are needed.
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.
eBay response captured — Checked Oct 16, 2026 16:27 UTC
Availability has not been rechecked; current availability is unknown.
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eBay response captured — Checked Oct 15, 2026 16:28 UTC
Availability has not been rechecked; current availability is unknown.
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View on eBayObserved public listing price, not an accepted sale amount.
eBay response captured — Checked Oct 15, 2026 16:01 UTC
Availability has not been rechecked; current availability is unknown.
Buy It Now
View on eBayObserved public listing price, not an accepted sale amount.
eBay response captured — Checked Oct 8, 2026 16:10 UTC
Availability has not been rechecked; current availability is unknown.
Best Offer · Buy It Now
View on eBayObserved public listing price, not an accepted sale amount.
eBay response captured — Checked Oct 7, 2026 16:27 UTC
Availability has not been rechecked; current availability is unknown.
Buy It Now
View on eBayObserved public listing price, not an accepted sale amount.
eBay response captured — Checked Sep 30, 2026 16:02 UTC
Availability has not been rechecked; current availability is unknown.
Buy It Now
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 | 6 | 25.0000 | 110.0000 | 56.8666666666666667 |
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 |
|---|---|---|---|---|
| Jan 28, 2026 00:42 UTC | Applied Materials 3700-01089 Center Ring Assembly x1 | Completed listing price | 11.33 (currency not captured) | Not established |
| Sep 13, 2024 18:15 UTC | Applied Materials/AMAT Seal Center Assy NW25 w/ Viton O-Ring PN: 3700-01089 | Completed listing price | 50 (currency not captured) | Not established |
| May 10, 2024 13:04 UTC | Lot of 4 Applied Materials 3700-01089 Center Ring Assembly | Completed listing price | 20 (currency not captured) | Not established |
| Apr 18, 2023 16:28 UTC | 3 AMAT 3700-01089 Seal Center Ring Assy, NW25 w/ O-ring SST, 451919 | Completed listing price | 15 (currency not captured) | Not established |
| Oct 17, 2022 21:12 UTC | 5 MKS HPS 100312703 Seal, Center Ring, NW25, AMAT 3700-01089, 453554 | Completed listing price | 55 (currency not captured) | Not established |
| Sep 1, 2022 03:19 UTC | Applied Materials AMAT Centering Seal Ring Assembly NW25 3700-01089 | Completed listing price | 15.49 (currency not captured) | Not established |
| Jul 27, 2022 00:46 UTC | 2 Applied Materials AMAT Centering Seal Ring Assembly NW25 3700-01089 | Completed listing price | 19.99 (currency not captured) | Not established |
| May 6, 2022 00:28 UTC | 3 AMAT 3700-01089 Seal Center Ring Assy, NW25 w/ O-ring SST, 451919 | Completed listing price | 15 (currency not captured) | Not established |
| May 6, 2022 00:21 UTC | 10 MKS HPS 100312703 Seal, Center Ring, NW25, AMAT 3700-01089, 322116 | Completed listing price | 95 (currency not captured) | Not established |
| Oct 23, 2021 07:05 UTC | LOT OF 7 APPLIED MATERIALS 3700-01089 SEAL CTR RING ASSY NW25 W/VITON ORING SST | Completed listing price | 70 (currency not captured) | Not established |
| Mar 18, 2021 15:49 UTC | Applied Materials (AMAT) 3700-01089 Centering Ring Assembly NW25 with Viton SST | Completed listing price | 10 (currency not captured) | Not established |
| Jun 7, 2020 14:39 UTC | Applied Materials (AMAT) 3700-01089 Centering Ring Assembly NW25 with Viton SST | Completed listing price | 10 (currency not captured) | Not established |
| Feb 26, 2020 19:42 UTC | 2 AMAT 3700-01089 Seal CTR Ring Assembly NW25 W/Viton O-Ring SST, 452213 | Completed listing price | 20 (currency not captured) | Not established |
| Oct 3, 2019 13:39 UTC | AMAT 3700-01089 SEAL CTR RING ASSY NW25 W/VITON ORING S | Completed listing price | 12.95 (currency not captured) | Not established |
| Nov 19, 2016 12:24 UTC | AMAT 3700-01089 SEAL CTR RING ASSY NW25 W/VITON ORING S | Completed listing price | 12.95 (currency not captured) | Not established |
| Sep 15, 2016 14:37 UTC | AMAT 3700-01089 Centering Ring Assembly NW25 with Viton SST | Completed listing price | 10 (currency not captured) | Not established |
| Mar 11, 2014 16:16 UTC | APPLIED MATERIALS 3700-01089 SEAL CTR RING ASSY NW25 W/VITON ORING SST | Completed listing price | 60 (currency not captured) | Not established |
| Jan 8, 2014 17:08 UTC | APPLIED MATERIALS 3700-01089 SEAL CTR RING ASSY NW25 W/VITON ORING SST | Completed listing price | 60 (currency not captured) | Not established |
| Dec 8, 2013 00:40 UTC | APPLIED MATERIALS 3700-01089 SEAL CTR RING ASSY NW25 W/VITON ORING SST | Completed listing price | 60 (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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Legacy record; no enhanced status check captured
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Best Offer lookup was not verified; no accepted-price claim is made.
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Legacy record; no enhanced status check captured
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Best Offer lookup was not verified; no accepted-price claim is made.
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Legacy record; no enhanced status check captured
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Legacy record; no enhanced status check captured
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Best Offer lookup was not verified; no accepted-price claim is made.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
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Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
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Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
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