TA LUFT (Fugitive Emission) Certified-Thread Type   TA LUFT(Fugitive Emission) Certified-Flange Type       API-6D Monogram   CRN Registered Certificates Number for all provinces in Canada API-607 4th Firesafe  API-607 4th Firesafe API-607 4th Firesafe API-607 4th Firesafe   API-607 5th Firesafe /ISO10497 API-607 5th Firesafe /ISO10497   API-607 5th Firesafe /ISO10497   BS-6755 /ISO 10497 Firesafe