| Description | Focus ring / ESC guard |
|---|---|
| Nominal size | 8 inch |
| Reported platform context | Lam 2300 appears in evidence |
A shaped process-facing ring or chamber component used near a wafer, chuck, electrode, or gas path.
Geometry, material, coating, and cleanliness can affect plasma behavior, contamination risk, and fit.
common lightweight chamber hardware material
electrically insulating, process-compatible material used in chamber hardware
high-purity silica glass used in plasma or high-temperature environments
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 14, 2026 16:20 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 16:23 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 | 2 | 1222.7700 | 1300.0000 | 1261.3850000000000000 |
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 |
|---|---|---|---|---|
| Dec 31, 2024 19:49 UTC | Lam Research Focus ring 8" 716-330504-081 | Completed listing price | 350 (currency not captured) | Not established |
| Sep 30, 2024 11:35 UTC | LAM RESEARCH (LAM) 716-330504-081 RING, FOCUS, 8, ESC, GUARD | Completed listing price | 1521.95 (currency not captured) | Not established |
| Aug 1, 2024 13:10 UTC | 716-330504-081 / SMALL FOCUS RING / LAM RESEARCH | Completed listing price | 1222.77 (currency not captured) | Not established |
| Mar 7, 2024 14:42 UTC | LAM RESEARCH CERAMIC FOCUS RING 8†716-330504-081 AMD10007598 | Completed listing price | 999.99 (currency not captured) | Not established |
| May 29, 2019 18:36 UTC | LAM RESEARCH (LAM) 716-330504-081 RING, FOCUS, 8, ESC, GUARD | Completed listing price | 895 (currency not captured) | Not established |
| Mar 30, 2018 19:46 UTC | 716-330504-081 RING FOCUS 8" ESC | Completed listing price | 800 (currency not captured) | Not established |
| Nov 9, 2017 18:36 UTC | LAM, 716-330504-081 8" FOCUS RING | Completed listing price | 699 (currency not captured) | Not established |
| Apr 22, 2015 22:43 UTC | LAM RESEARCH 716-330504-081 RING FOCUS, 8" ESC GUARD , NEW | Completed listing price | 1100 (currency not captured) | Not established |
| Oct 28, 2013 02:42 UTC | LAM: 8" Esc. Guard 716-330504-081 | Completed listing price | 740 (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.
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.
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.
View on eBayOriginal public listing price is shown separately from recorded accepted amounts.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Acceptance recorded by the source; fulfillment is not verified. Availability has not been rechecked; current availability is unknown. Checked Aug 31, 2026 18:11 UTC.
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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