... parts with high quality approvedNSF61,WRAS,KTW,W270,FDA,ACS,ULColor:blackMaterial:siliconeperformance:good high/low temperature,aging resistance ... ,good electrical properties,color stability.certification:NSF61,KTW,ACS,W270,FDA,ULquality standard:ISO9001:2008,ISO/TS ... Testing Machinery: Machine Name Brand & Model No. Quantity Number of Year(s) Used Condition Water resistance tester DKB-501S ...