3M Mastic teepu 2166 bụ ọkachamara ọkwa mmiri na-adịghị mmiri, ọ nwere ezigbo ndakọrịta na nrụzi akara, nwere ike iru eru maka ngwaahịa dị iche iche metụtara mkpuchi sekit.Ihe ndị dị nro, ndị nwere ọdịdị dị mma dịkwa mma maka ijuputa ihe ndị na-adịghị mma, ebe a nwalere nguzogide ya na nrụgide ma ọ ka na-arụ ọrụ na mwepu 18 degrees.Ya kasị mma e ji mara bụ ya ọma waterproof sealing arụmọrụ, nwere ike tinye n'ọrụ niile di iche iche nke eletriki, nkwurịta okwu akụrụngwa waterproofs na mmiri-àmà, ma nwekwara ike etinyere na ikuku mkpuchi waya clip waterproof na mmiri-àmà, na mgbakwunye na, ngwa nke Igwe okpuru mmiri okpuru mmiri bụkwa akụkụ dị mkpa nke 2166 nwere ike iru eru.Igwe okpuru mmiri nke okpuru mmiri ejiri okpukpu abụọ jikọtara ya na J20 nwere ike iguzogide oke nrụgide mmiri na mkpuchi, dịka oke ntuziaka (EU) 2015/863 siri dị, dị ka emezigharịrị na Mgbakwunye II nke EU RoHS Directive 2011/65/EU.