Manufactured in India | UK-Based Service for Instrumentation Valves & Fittings

Instrumentation Fittings

Instrumentation Fittings by Seiko Valves

High-precision instrumentation fittings for secure, leak-free connections in oil & gas, chemical, and industrial systems, compatible with diverse tubing and thread standards. Our extensive range includes single and twin ferrule tube fittings for robust sealing, pipe fittings like hex nipples and couplings, and 37° flared fittings for high-pressure applications. We offer elbows, tees, and crosses for flexible configurations, along with connectors and adapters for NPT, ISO, and SAE/MS systems. Specialized DIN 2353 bite-lok fittings, quick-connect couplings, and stainless steel push-in fittings ensure versatility, while gaskets and seals enhance reliability. Download our catalog for detailed specifications.

Male Connector Tapered Thread (Fractional Tube to Female NPT Thread Connection)

Male Connector Tapered Thread (Fractional Tube to Female ISO Tapered Pipe Thread Connection)

Male Connector Tapered Thread (Metric Tube to Female NPT Thread Connection)

Male Connector ISO Tapered Thread (Metric Tube to Female ISO Tapered Thread Connection)

Male Connector SAE/MS Straight Thread (Fractional Tube to SAE/MS Female Straight Thread Boss Connection)

Long Male Connector SAE/MS Straight Thread (Fractional Tube to SAE/MS Straight Thread Boss Connection)

Male Connector EO-Seal Straight Thread (Fractional Tube to SAE/MS Female Straight Thread Connection)

Male Connector EO-Seal ISO Parallel Thread (Fractional Tube to Female ISO Parallel Pipe Thread Connection)

Male Connector EO-Seal ISO Parallel Thread (Metric Tube to Female ISO Parallel Pipe Thread Connection)

Male Connector ISO Parallel Thread-RP (Fractional Tube to Female ISO Parallel Pipe Thread Connection)

Male Connector ISO Parallel Thread-RP (Metric Tube to Female ISO Parallel Pipe Thread Connection)

Male Connector ISO Parallel Thread - RS (Fractional Tube to Female ISO Parallel Pipe Thread Connection)

Male Connector ISO Parallel Thread - RS (Metric Tube to Female ISO Parallel Pipe Thread Connection)

Thermocouple Male Connector Tapered Thread (Fractional Tube to Female NPT Thread Connection)

Bulkhead Male Connector Tapered Thread (Fractional Tube to Female NPT Thread Connection)

Bulkhead Male Connector Tapered Thread (Metric Tube to Female NPT Thread Connection)

Male Elbow Tapered Thread (Fractional Tube to Female NPT Thread Connection)

Male Elbow Tapered Thread (Metric Tube to Female NPT Thread Connection)

Fractional Tube to Female ISO Tapered Pipe Thread Connection

Male Elbow ISO Tapered Thread (Metric Tube to Female ISO Tapered Pipe Thread Connection)

Positionable Male Elbow SAE/MS Straight Thread (Fractional Tube to SAE/MS Straight Thread Boss Connection)

Positionable Male Elbow ISO Parallel Thread (Fractional Tube to Female ISO Parallel Pipe Thread Connection)

Positionable Male Elbow ISO Parallel Thread (Metric Tube to Female ISO Parallel Pipe Thread Connection)

Male Branch Tree Tapered Thread (Fractional Tube to Female NPT Thread Connection)

Male Branch Tree Tapered Thread (Metric Tube to Female NPT Thread Connection)

Male Run Tee Tapered Thread (Fractional Tube to Female NPT Thread Connection)

Male Run TeeTapered Thread (Metric Tube to Female NPT Thread Connection)

Positionable Male Branch Tee SAE/MS Straight Thread (Fractional Tube to SAE/MS Straight Thread Boss Connection)

Positionable Male Branch Tee ISO Parallel Thread (Fractional Tube to Female ISO Parallel Thread Connection)

Positionable Male Branch Tee ISO Parallel Thread (Metric tube to female ISO parallel thread connection)

Positionable Male Run Tee SAE/MS Straight Thread (Fractional Tube to SAE/MS Straight Thread Boss Connection)

Positionable Male Run Tee ISO Parallel Thread (Fractional Tube to Female ISO Parallel Thread Connection)

Positionable Male Run Tee ISO Parallel Thread (Metric Tube to Female ISO Parallel Thread Connection)

Female Connector Tapered Thread (Fractional Tube to Male NPT Thread Connection)

Female Connector ISO Tapered Thread (Fractional Tube to Male ISO Tapered Pipe Thread Connection)

Female Connector ISO Parallel Thread (Fractional Tube to Male ISO Parallel Gage Thread Connection)

Bulkhead Female Connector Tapered Thread (Fractional Tube to Male NPT Thread Connection)

Bulkhead Female Connector Tapered Thread (Metric Tube to Male NPT Thread Connection)

Female Elbow Tapered Thread (Fractional Tube to Male NPT Thread Connection)

Female Elbow Tapered Thread (Metric Tube to Male NPT Thread Connection)

Female Branch Tee Tapered Thread (Fractional Tube Male NPT Thread Connection)

Female Branch Tee Tapered Thread (Metric Tube Male NPT Thread Connection)

Female Run Tee Tapered Thread (Fractional Tube to Male NPT Thread Connection)

Female Run Tee Tapered Thread (Metric Tube to Male NPT Thread Connection)

Union (Fractional Tubes Connection)

Union (Metric Tube to Fractional Tubes Connection)

Union (Metric Tubes Connection)

Reducing Union (Fractional Tubes Connection)

Bulkhead Union (Metric Tubes Connection)

Bulkhead Union (Fractional Tubes Connection)

Bulkhead Reducing Union (Fractional Tubes Connection)

Union Elbow (Fractional Tubes Connection)

Union Elbow (Metric Tubes Connection)

Reducing Union Elbow (Fractional Tubes Connection)

Union Tee (Fractional Tubes Connection)

Union Tee (Metric Tubes Connection)

Reducing Union Tee (Fractional Tubes Connection)

Union Cross (Fractional Tubes Connection)

Union Cross (Metric Tubes Connection)

An Union (Fractional Tubes Connection)

An Bulkhead Union (Fractional Tubes Connection)

Tube Socket Weld Union (Fractional Tubes Connection)

Tube Socket Weld Elbow (Fractional Tubes Connection)

Male Pipe Weld Connector (Fractional Tube to Male Pipe Weld Connection)

Male Pipe Weld Connector (Metric Tube to Male Pipe Weld Connection)

Male Pipe Weld Elbow (Fractional Tube to Male Pipe Weld )Connection

Reducer (Fractional Tube to Fractional Ports Connection)

Reducer (Metric Tube to Metric Ports Connection)

Reducer (Metric Tube to Fractional Ports Connection)

Bulkhead Reducer (Fractional Tube to Fractional Ports Connection)

Port Connector (Fractional Ports Connection)

Port Connector (Metric Ports Connection)

Reducing Port Connector (Fractional Ports Connection)

Reducing Port Connector (Metric Ports Connection)

Cap (Caps End for Fractional Tube Connection)

Cap (Caps End for Metric Tube Connection)

Plug (Fractional Tube Connection)

Plug (Metric Tube Connection)

Nut (Fractional Tube)

Nut (Metric Tube)

Back Ferrule (Fractional Tube)

Back Ferrule (Metric Tube)

Front Ferrule (Fractional Tube)

Front Ferrule (Metric Tube)

Single Ferrule (Fractional Tube)

Single Ferrule (Metric Tube)

Bulkhead Lock Nut (Fractional Tube)

Bulkhead Lock Nut (Fractional Tube)

RP Fitting Gasket (Copper Gasket for ISO Parallel Male RS or RP )Fittings

RS Fitting Gasket (Stainless Steel Gasket for ISO Parallel Male RS Fittings)

RG Fitting Gasket (Copper Gasket for ISO Parallel Female Gage Thread)

Hex Nipple

Hex Reducing Nipple

Nipple Close

Long Hex Nipple

Adapter

Adapter Gasket

Gauge Adapter

Reducing Adapter

Bushing Reducing

Reducer

Hex Coupling

Hex Reducing Coupling

Female Elbow

Street Elbow

Reducing Street Elbow

Male Elbow

Female Tee

Street Tee

Branch Tee

Male Tee

Female Cross

Union Ball Joint

Pipe Cap

Pipe Plug

Hollow Hex Plug

Hollow Hex Plug

Hex Head Plug

Male Adapter

An Male Adapter

Tube To Hose Connector

Female Adapter

Male Hose Connector

Tube Fittings With Integral Flange