| Description | Focusing ring |
|---|---|
| Material | Quartz / QZ / QTZ |
| Nominal size/context | 150 mm / 170 poly, extended cathode wording appears in evidence |
A process-facing ring or plate used around the wafer, chuck, throttle opening, or gas-distribution area inside a semiconductor process chamber.
Geometry, material, coating, cleanliness, and revision affect fit, plasma behavior, gas flow, contamination risk, and process repeatability.
Common in chamber hardware; verify coating and cleaned/refurbished status.
Often used for plasma-facing insulation and wear resistance when supported by part markings.
High-purity silica glass used in many plasma or thermal chamber locations.
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 5, 2026 16:21 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 19, 2026 16:27 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 19, 2026 16:20 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 18, 2026 16:13 UTC
Availability has not been rechecked; current availability is unknown.
Best Offer · 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 | 4 | 650.0000 | 800.0000 | 731.2475000000000000 |
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 |
|---|---|---|---|---|
| Mar 17, 2023 00:47 UTC | AMAT 0200-09557 Ring Focus, Quartz, Poly, 150mm/170, 417418 | Completed listing price | 400 (currency not captured) | Not established |
| Aug 13, 2020 14:09 UTC | Applied Materials (AMAT) 0200-09557 WEST COAST QUARTZ RING, FOCUSING, QTZ | Completed listing price | 779.95 (currency not captured) | Not established |
| Feb 5, 2019 12:21 UTC | 0200-09557 RING, FOCUSING, QZ, 15MM POLY, EXTCATH 1 | Completed listing price | 800 (currency not captured) | Not established |
| Jan 6, 2019 12:20 UTC | 0200-09557 RING, FOCUSING, QZ, 15MM POLY, EXTCATH 1 | Completed listing price | 800 (currency not captured) | Not established |
| Dec 7, 2018 12:20 UTC | 0200-09557 RING, FOCUSING, QZ, 15MM POLY, EXTCATH 1 | Completed listing price | 800 (currency not captured) | Not established |
| Nov 7, 2018 12:20 UTC | 0200-09557 RING, FOCUSING, QZ, 15MM POLY, EXTCATH 1 | Completed listing price | 800 (currency not captured) | Not established |
| Oct 8, 2018 12:20 UTC | 0200-09557 RING, FOCUSING, QZ, 15MM POLY, EXTCATH 1 | Completed listing price | 800 (currency not captured) | Not established |
| Sep 7, 2018 18:19 UTC | 0200-09557 RING, FOCUSING, QZ, 15MM POLY, EXTCATH 1 | Completed listing price | 850 (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.
Legacy 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.
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.
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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