Can ORFS connection with GW BSP in carbon steel, type GAI-B be sealed on the internal BSP thread using Teflon tape or anaerobic sealant?

Short answer: No . do not rely on Teflon tape or anaerobic thread sealant to seal an ORFS connection with GW BSP in carbon steel, type GAI-B. Explanation: An ORFS (O-Ring Face Seal) connection seals via an O-ring compressed between the flat face of the male and female ORFS faces. For the described ORFS connection with GW BSP in carbon steel, type GAI-B, the internal BSP thread is a mechanical joint only; its function is to position and clamp the fitting so the ORFS face and Oâring can form the pressure seal. Applying Teflon tape or anaerobic sealant on the internal BSP thread is unnecessary and can be harmful . it may prevent proper metalâtoâmetal engagement, alter torque values, contaminate the Oâring or sealing surfaces, or push sealant into the fluid path causing blockage or damage. If the BSP thread also serves as a pressureâbearing or leak path in a nonstandard assembly, consult manufacturer instructions, but for standard ORFS GAIâB fittings the correct practice is to assemble clean, lubricate the Oâring if specified, and torque to the recommended value so the Oâring seals the face.

Is it acceptable to use Teflon tape or anaerobic sealant on the internal BSP thread of the ORFS connection with GW BSP in carbon steel, type GAI-B?

No - do not use Teflon tape or anaerobic thread sealant on the internal BSP thread of the ORFS connection with GW BSP in carbon steel, type GAI-B. ORFS fittings seal at the face (O-ring) and the threaded portion is not intended to provide the pressure seal; adding Teflon or sealant can prevent proper metal-to-metal engagement, distort the joint, contaminate the O-ring groove, risk O-ring extrusion or swelling, and can cause leaks or fitting failure. For type GAI-B use the correct O-ring and mating surface finish, assemble per manufacturer's torque/specifications, and only apply recommended lubricants compatible with the O-ring material if specified.

May Teflon tape or anaerobic sealant be applied to the internal BSP thread of ORFS connection with GW BSP in carbon steel, type GAI-B?

No. do not apply Teflon tape or anaerobic sealant to the internal BSP thread of ORFS connection with GW BSP in carbon steel, type GAI-B. Explanation: ORFS connection with GW BSP in carbon steel, type GAI-B is designed to seal at the ORFS face (O-ring and flat mating surface), not on the pipe thread. The internal BSP thread in this fitting is intended only for mechanical engagement (alignment and retention) and must remain free of thread sealants that could interfere with the ORFS sealing face or O-ring. Applying Teflon tape or anaerobic sealant can cause the following risks: - Prevent proper metal-to-metal face contact and O-ring compression, leading to leaks at the ORFS face. - Introduce cured or loose sealant particles into the fluid system, risking contamination, O-ring damage, or downstream component blockage. - Alter thread fit/tolerance, causing improper torque, galling, or thread damage in carbon steel galvanized threads. - Complicate future disassembly; anaerobic adhesives can make removal very difficult and may damage threads or the O-ring. Recommended practice: Assemble ORFS connection with GW BSP in carbon steel, type GAI-B per manufacturer torque/specifications, ensure O-ring is correct material and undamaged, clean mating surfaces and threads of debris, and use no thread sealant on the internal BSP thread. If the installation requires sealing on pipe threads for an accompanying threaded joint (not the ORFS face), consult manufacturer guidance for acceptable products and procedures specific to that threaded joint only.

ORFS connection with GW BSP in carbon steel, type GAI-B

Additional information

Material	CS – steel (cast iron)

ORFS fitting with internal BSP thread (seal on the thread – with Teflon tape or anaerobic sealant), type GAI-B. Material: carbon steel, galvanized.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HO-GAI-09-B-04	GW BSP 1/4" fitting - GZ ORFS 9/16"-18	-	630	In stock	Enquiry
HO-GAI-11-B-04	Fitting GW BSP 1/4" - GZ ORFS 11/16"-16	-	630	In stock	Enquiry
HO-GAI-13-B-04	Fitting GW BSP 1/4" - GZ ORFS 13/16"-16	-	630	In stock	Enquiry
HO-GAI-13-B-06	Fitting GW BSP 3/8" - GZ ORFS 13/16"-16	-	630	In stock	Enquiry
HO-GAI-16-B-08	BSP 1/2" male connector - ORFS 1"-14 female connector	-	420	In stock	Enquiry
HO-GAI-19-B-08	Fitting GW BSP 1/2" - GZ ORFS 1.3/16"-12	-	420	In stock	Enquiry
HO-GAI-19-B-12	Fitting GW BSP 3/4" - GZ ORFS 1.3/16"-12	-	420	In stock	Enquiry
HO-GAI-23-B-16	Fitting GW BSP 1" - GZ ORFS 1.7/16"-12	-	420	In stock	Enquiry
HO-GAI-27-B-20	Fitting GW BSP 1.1/4" - GZ ORFS 1.11/16"-12"	-	280	In stock	Enquiry
HO-GAI-32-B-24	GW BSP 1.1/2" fitting - GZ ORFS 2"-12	-	280	In stock	Enquiry