Semiconductor FFKM O-ring selection: MORISEAL Morisz grades and application limits

Choosing semiconductor FFKM O-rings starts with the sealing duty, then the material grade and the finished dimensions. The same polymer family does not make every compound interchangeable. This guide organizes MORISEAL's published Morisz material table into a screening reference for equipment engineers, maintenance buyers and local distributors.

All compression-set values below use the manufacturer's stated condition: 200 °C for 70 h. Hardness is reproduced as HA. Temperature ranges are catalog values, not qualification of every gas mixture or plasma recipe.

For moving seal contact points in plasma exposure, the manufacturer highlights low friction and wear resistance for 5130UP. Establish whether the actual seal moves, how it is loaded and whether the exposure is direct or remote plasma.

For specialty gas piping, MPF506UP is a documented candidate direction. This does not establish compatibility with every specialty gas. Record the gas identity, mixtures, concentration, pressure and temperature before asking for a material recommendation.

For water vapor, oxygen or ozone at high temperature, the manufacturer names 6002UP and 5802SP. Their listed hardness and compression-set values differ. Ask which difference matters to the actual gland and operating cycle; the table alone does not choose the finished seal.

For plasma exposure under mechanical stress at high temperature, compare 6880SP and 6880SZ. N65 addresses a higher catalog upper temperature. ST50i addresses a lower catalog minimum temperature. Neither endpoint can be extended to an unspecified duty duration or chemical combination.

In the published table, 6880SP and 6880SZ share a temperature range of 0 to 315 °C and hardness of 80±5 HA, while their compression-set values are 17% and 9%, respectively, at 200 °C / 70 h. This is a documented numerical difference. It does not establish identical formulation, plasma erosion, particle release, outgassing, seal life or universal substitution.

The table does not state the compression-set test standard, specimen geometry or squeeze ratio. Request those details before comparing these results with another manufacturer's datasheet. No test report or equipment qualification is created by reproducing a catalog table.

A request for a material grade is incomplete without a size or drawing. Record inner diameter, cross-section, units, tolerances and the applicable size code. Also record the gland dimensions and whether the joint is static or dynamic. A picture shows appearance; it cannot establish dimensions or material identity by itself.

MORISEAL lists standard size families and custom sizes on its size inquiry page. An index of size families does not prove every material-and-size combination is immediately available.

The SEMI directory lists Sen Huan Electrical Technology with the moriseal.com website. The SEMICON China 2025 exhibitor profile introduces Shanghai Moriseal Advanced Material Technology in its factory section. This supports company background; a member directory or exhibition listing is not product certification.

Manufacturer material table: https://www.moriseal.com/en/Product/index.aspx Chinese manufacturer table: https://www.moriseal.com/Product/index.aspx Size inquiry: https://www.moriseal.com/ProductCenter/index.aspx SEMI company listing: https://www.semi.org/en/resources/ecs-directory/sen-huan-electrical-technology SEMICON China exhibitor profile: https://expo.semi.org/china2025/Public/eBooth.aspx?BoothID=602348

Manufacturers and distributors can send the known grade, size list, quantities, non-confidential operating conditions, destination and requested delivery date. Unknown items can be clarified before quoting. Price, supply, minimum order, documentation and lead time require a quotation for the actual specification.

Browse the material-series product pages: https://store.mst-sg.com/store/semiconductor-seals-o-rings

Use the inquiry action on this page to carry the tagged grades into the request. A reply with a non-confidential application question can also help clarify which missing conditions need checking.

MST Engineering editorial reference. Source review: 2026-10-19. No application qualification or cross-brand drop-in equivalence is claimed.

Open the English product page for the exact material grade, manufacturer photograph, documented parameters and a quotation request by dimensions. These are material-series listings; finished size and application suitability require confirmation.

Morisz 5130UP — Product data and quotation https://store.mst-sg.com/store/semiconductor-seals-o-rings/MORISZ-5130UP-RFQ

Morisz MPF506UP — Product data and quotation https://store.mst-sg.com/store/semiconductor-seals-o-rings/MORISZ-MPF506UP-RFQ

Morisz 6002UP — Product data and quotation https://store.mst-sg.com/store/semiconductor-seals-o-rings/MORISZ-6002UP-RFQ

Morisz 5802SP — Product data and quotation https://store.mst-sg.com/store/semiconductor-seals-o-rings/MORISZ-5802SP-RFQ

Morisz 6880SP — Product data and quotation https://store.mst-sg.com/store/semiconductor-seals-o-rings/MORISZ-6880SP-RFQ

Morisz 6880SZ — Product data and quotation https://store.mst-sg.com/store/semiconductor-seals-o-rings/MORISZ-6880SZ-RFQ

Morisz N65 — Product data and quotation https://store.mst-sg.com/store/semiconductor-seals-o-rings/MORISZ-N65-RFQ

Morisz ST50i — Product data and quotation https://store.mst-sg.com/store/semiconductor-seals-o-rings/MORISZ-ST50I-RFQ

Prepare your inquiry with the semiconductor O-ring RFQ checklist: https://store.mst-sg.com/community/t/5-semiconductor-o-ring-rfq-checklist-dimensions-operating-cond