Techcon TSD1400-210APK O-Ring, 3/4 in ID x 1/8 in Buna-N (Pack of 10)

Description

This Buna-N O-ring seats inside Techcon TS1400 series precision dispensing valves and syringe barrel assemblies, and it is one of the dispensing valve parts that keeps a valve holding pressure instead of leaking adhesive back past the piston. Inside diameter runs 3/4 in, cross section 1/8 in, and each pack holds 10 rings so a line tech can swap a full set at PM time instead of hunting for a single spare.

Where dispensing valve parts like this one get used

Assembly lines running one part and two part adhesives, sealants, and potting compounds cycle these seals every time the valve fires. Static mixers, syringe barrels, and pneumatic dispensing valves on electronics, medical device, and general assembly benches all use this size somewhere in the fluid path. Swapping the O-ring at the first sign of a slow drip or a pressure drop costs less than replacing the whole valve body.

How Buna-N holds up in the dispensing valve parts family

Buna-N (nitrile) runs from about negative 40 F to 250 F and resists petroleum oils, hydraulic fluid, water, and alcohols, which covers most solvent cut and water based adhesive systems run through Techcon equipment. It performs less well against strong ketones or aggressive solvents. For those chemistries, an EPR O-ring in the same TSD1400 family is the better match. Compression set stays low through repeated valve cycles, so seal life tracks with duty cycle rather than calendar time.

Specifications

Order by the pack and keep a spare set on the bench next to the valve it services. Browse the full range of dispensing valves, mixers, and nozzles for the rest of the fluid path. For application demos and dispensing technique walkthroughs, see Techcon.

Need Help?

Need help matching an O-ring material to your adhesive chemistry? Call (800) 220-1966 or email [email protected].