Quick view Capcure 3-800 Mercaptan / PM 800 In Stock Ship in 24 hours This is mercaptan capcure 3-800 / PM 800. New batch ready to ship within the week and usually same day.. A mercaptan-terminated polymer used as a liquid curing agent with unique rapid-cure characteristics for epoxy resins at... MSRP: Was: Now: $144.99 Choose Options Compare