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WOLMAR SALT Chemical compatibility with O-rings, rubbers, & plastics

Wolmar salt, also known as Glauber's salt, is the decahydrate form of sodium sulfate (Na₂SO₄·10H₂O). It is a white crystalline solid that is soluble in water and has various applications. In medicine, Wolmar salt is used as a laxative and in the treatment of constipation. It is also employed in the manufacture of glass, detergents, and dyes. In the textile industry, it serves as a leveling agent in dyeing processes. Additionally, Wolmar salt is used in the chemical industry for the production of sodium sulfide, sodium silicate, and other sodium compounds.

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Paint covered o-ring

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Full Chem Table

Custom Gaskets & Cut Parts

Material	Performance	Get a quote
FFKM (CanRez™, Kalrez®, Chemraz®)	Excellent: <15% Swelling	Get a quote
FKM ETP (Viton® Extreme)	Excellent: <15% Swelling	Get a quote
FKM (Viton®)	Excellent: <15% Swelling	Get a quote
NBR (Buna-N, Nitrile)	Excellent: <15% Swelling	Get a quote
HNBR (Hydrogenated Nitrile)	Excellent: <15% Swelling	Get a quote
EPDM (Ethylene Propylene)	Excellent: <15% Swelling	Get a quote
Aflas® (TFE/P, FEPM)	--- Insufficient Testing Data	Get a quote
Silicone (VMQ, PVMQ)	Excellent: <15% Swelling	Get a quote
Fluorosilicone (FVMQ)	Excellent: <15% Swelling	Get a quote
Polyurethane (PU, AU)	Excellent: <15% Swelling	Get a quote
Teflon® (PTFE)	--- Insufficient Testing Data	Get a quote
Neoprene (Chloroprene)	Acceptable: <15-25% Swelling	Get a quote
SBR (Styrene-Butadiene)	Excellent: <15% Swelling	Get a quote
ACM (Acrylic Rubber)	Acceptable: <15-25% Swelling	Get a quote
Butyl (IIR, Isobutylene Isoprene)	Excellent: <15% Swelling	Get a quote
Butadiene Rubber (BR)	Excellent: <15% Swelling	Get a quote
Isoprene Rubber (Polyisoprene)	Excellent: <15% Swelling	Get a quote
Natural Rubber (NR)	Excellent: <15% Swelling	Get a quote
Hypalon (CSPE)	Excellent: <15% Swelling	Get a quote

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wolmar-salts

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