Description
Techcon TSD1400-209A is a black Buna O-ring used as dispensing valve parts inventory for fluid-dispensing service work. It is the kind of small seal that protects a bench from avoidable downtime when a valve, receiver head, or accessory assembly starts leaking, binding, or losing pressure stability during normal adhesive and sealant dispensing.
Where these dispensing valve parts belong
O-rings sit at the quiet failure points in dispensing equipment. They seal air-control areas, material passages, caps, adaptors, and service joints that need repeated cycling without leakage. Buna-N is commonly selected for general industrial sealing where the fluid path includes oils, many adhesives, greases, and shop handling conditions that would be rough on a weaker elastomer. When a seal hardens or takes compression set, the station can look like it has a controller problem even though the real issue is a low-cost wear part.
Use this O-ring when the maintenance instruction, removed component, or service drawing calls for TSD1400-209A. Match the part number first, then confirm the groove, bore, and nearby hardware before closing the assembly. A seal that is close in size but not exact can roll during installation, pinch at the edge, or leak after the first pressure cycle.
Replacing dispensing valve parts cleanly
Depressurize the station before service, remove the old seal with a non-marring pick, and wipe residue from the groove. Inspect for cuts, swelling, flattening, chemical attack, or debris that could damage the new O-ring. Lubricate only as the current Techcon service guide allows, then seat the replacement evenly around the groove. After reassembly, test with air and a low-risk material path before the valve returns to production.
| SKU | TECTSD1400-209A |
|---|---|
| Part Type | O-ring |
| Material | Buna-N |
| Color | Black |
| Unit | Each |
| Service Role | Replacement seal for compatible Techcon assemblies |
Keep this part with related seals, fittings, tubing, receiver-head spares, and valve service kits so maintenance can complete a rebuild without stopping to source one seal. Browse related dispensers, mixers, and nozzles. For manufacturer background on Techcon systems, visit Techcon.
Need Help?
Need help confirming whether this Buna O-ring matches your valve or receiver-head assembly? Call (800) 220-1966 or email [email protected].
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