![Oil and gas seal](/uploadfile/bannerimg/16245247449424.jpg)
JST offers two lines of hammer union seals, one from elastomer, another one from elastomer reinforced with anti-extrusion ring which is normally used for high pressure.
The material mainly includes NBR, HNBR and Viton without/with brass or stainless steel anti-extrusion ring. It can fully meet the specific performance requirements of your demanding operating environment.
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