Black Non-toxic Grade FDA Approved Silicone Washer

Metroseal

Price not listed

PROPERTIES TEST METHOD VALUES FPS UNITS TEST METHOD VALUES METRIC UNITS SPECIFIC GRAVITY DIN 53508 1.20 ± 0.05 ASTM D297 1.20 ± 0.05 HARDNESS DIN 53505 40 ± 5 SH A ASTM D2240 40 ± 5 SH A TENSILE STRENGTH ( MIN ) DIN 53504 858 PSI ASTM D412 60 KG/CM2 ELONGATION AT BREAK ( MIN ) DIN 53504 200% ASTM D412 200% COMPRESSION SET (70º C/24 HRS/25% SET) (MAX) DIN 53517 40% ASTM D395 METHOD B 40% TEAR RESISTANCE ( ANGULAR ) MIN DIN 53515 112 LBS/INCH ASTM D624 20 KG/CM POLYMER CONTENT (%) 100 100 CHANGE IN PROPERTIES HEAT AGEING ( 72 HRS. AT 100 ºC ) ASTM D573 — HARDNESS (PTS) + 3 (MAX) + 3 (MAX) — TENS

Metroseal's own words, read from their page.

Buy from METROSEAL LTDMETROSEAL LTD is a UK retailer, not the maker. Price seen 2026-09-26. Not an affiliate link, we earn nothing from it.

Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.

UK company
Registered at Companies House as METROSEAL LTD, number 09198494. Checked 2026-08-29.
Means the business is a British legal entity, not a British-sounding name owned elsewhere. It says nothing about where anything is made.
UK operations
Not yet checked.
Means people employed here, or premises they actually work from. We keep this separate from the company badge because a registered office can be an accountant's spare room, and a company can be registered in Britain while everything it does happens somewhere else. Where we have not looked, we say so rather than assuming.
British-owned
Not established. Many companies file a statement rather than naming a controlling shareholder.
Read from the register of people with significant control, following the chain of holding companies. It does not gate anything: a firm can be made here and owned elsewhere, and that is worth telling you rather than hiding.
Where it is made
The maker doesn't say, so neither do we.
This is about the individual product, not the company. A British firm can sell things made abroad, which is normal and not a criticism. We would rather tell you which is which than average them into a score.

Black Non-toxic Grade FDA Approved Silicone Washer

Where this comes from

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