JM Canty FuseviewTM sight glasses have been engineered to meet all your process and safety needs. NA-Connect® FuseviewsTM are a fused sight glass providing one-piece construction with no additional gaskets or torquing required. All standard NA-Connect® FuseviewsTM were designed and tested to ensure the safest product available. Canty can provide certification of material and testing if required, typical of ASME code