# STEMA AS

> Norwegian B2B supplier of industrial seals and gaskets, based in Lillestrøm. Norsk leverandør av tetninger og pakninger til industri, vedlikehold og OEM.

Product pages and technical catalogues describe product families and reference dimensions. Confirm exact supplied item, material compound, availability, delivery time and application suitability with STEMA. EN 10204 3.1 certificates and other documentation are item/order-specific and must be requested and confirmed; do not assume universal certification. No online prices or stock guarantees.

## Core product catalogues
- [Bonded Seals / Dowty](https://stemaas.com/catalogue/bonded-seals.md): BSP, metric, SAE; GS ISO 6162 / ISO 6164. NBR, FKM, HNBR, EPDM. Links to both languages and source dimensions.
- [O-ringer / O-rings](https://stemaas.com/catalogue/o-rings.md): AS568 / BS 1806, ISO 3601, DIN 3771 and other size systems. NBR, FKM / Viton, EPDM, HNBR, VMQ, FFKM. Links to both languages and source dimensions.
- [ED Seals / DIN 3869](https://stemaas.com/catalogue/ed-seals.md): DIN 3869 dimensional reference; metric and BSP threads. NBR, FKM; FFKM on request. Links to both languages and source dimensions.

## Special Bonded Seal supply options
- [EPDM Bonded Seals / Dowty](https://stemaas.com/en/products/bonded-seals#epdm): EPDM / AISI 316 configurations on request; size and configuration confirmed per item.
- [Oxygen-cleaned Bonded Seals](https://stemaas.com/en/oxygen-cleaning): cleaning and cleaning certificate on request for specified items. ASTM G93 Level B has been offered for FKM / AISI 316. Inspection, standard edition and packaging agreed per order. Cleaning is not oxygen-service approval; EPDM and oxygen cleaning are separate supply options.
- [Oksygenrensing på norsk](https://stemaas.com/oksygenrensing): rengjøring, dokumentasjon og pakking.

## Further product families
- [WALFORM Seals](https://stemaas.com/en/products/walform-seals): FKM 90, L/S series; select by fitting system.
- [Hydraulic seals](https://stemaas.com/en/products/hydraulic-seals): rod, piston, wiper, guide and buffer seals.
- [Other products](https://stemaas.com/en/products/other-products): additional sealing and retaining products, on enquiry.

## Technical guidance and datasheets
- [Material guide](https://stemaas.com/en/materials): general guidance; exact compound and operating conditions require confirmation.
- [Materialguide på norsk](https://stemaas.com/materialer): materialvalg etter medium og drift.
- [Datasheets and extracted dimensions](https://stemaas.com/en/datasheets): source PDF links and readable catalogue tables.
- [Datablader og dimensjoner](https://stemaas.com/datablader): norske oversikter med kildehenvisning.
- [Technical insights](https://stemaas.com/en/technical-insights): product selection and measurement.

## Company and enquiries
- [About STEMA](https://stemaas.com/en/about-stema): Norwegian industrial supplier.
- [Distributors and OEMs](https://stemaas.com/en/distributors): B2B supply enquiries.
- [Distributører og OEM](https://stemaas.com/distributorer): Norsk informasjon om lager, levering og bestilling.
- [English contact](https://stemaas.com/en/contact): send dimensions, drawing, material, quantity, medium, temperature, pressure and documentation requirements.
- [Norsk kontakt](https://stemaas.com/kontakt): post@stemaas.com, +47 63 80 44 70; Nesgata 24, 2004 Lillestrøm, Norway.