Techcon TSD400-85 Teflon U-Cup Seal With Stainless Spring

Description

Techcon TSD400-85 Teflon U-Cup Seal With Stainless Spring is a dispensing valve parts item for TS5440 Microshot needle valve service. It gives maintenance teams a direct replacement seal for rebuild work where the valve must meter controlled deposits without leakage or inconsistent shutoff.

dispensing valve parts Service Use

• TS5440 Microshot needle valve repair and preventive maintenance.
• Bench stock for seals, rods, retainers, O-rings, and other small service items.
• Dispensing stations running adhesives, coatings, greases, sealants, or pastes.
• Maintenance kits stored near mixing nozzle, 2 part mixing nozzle, and jb weld mixing nozzle inventory.
• Replacement work where the old seal shows wear, leakage, or poor shutoff.

Use this part when the valve service list or removed component calls for TSD400-85. The Teflon seal and stainless spring format is specific, so match by part number before ordering. Clean the valve body and related wetted parts before installation, and keep the new seal protected from dust or cured material until it is installed.

dispensing valve parts Handling Notes

Needle valve rebuilds depend on the full stack of small parts. Inspect the needle, seat, spring area, and mating surfaces before closing the valve. If a nearby part is scratched, swollen, or flattened, replacing only the seal may not restore clean shutoff.

After reassembly, test the valve at a low setting, then confirm deposit size and stop-start behavior with the production material. Store spare seals by valve model so technicians do not mix similar-looking parts during a line repair.

The TS5440 style valve is used where controlled dots or beads matter, so small seal problems can show up as drool, inconsistent shot size, or extra cleanup at the part. Planned seal replacement helps keep the valve response predictable and reduces the chance of cured material building up around the needle path.

Keep the replacement in clean packaging until the rebuild starts. During service, avoid dragging the seal across sharp edges or dirty tools. Lay out the removed components in order, compare the old seal to the new part, and confirm the spring orientation before the valve is returned to the bench or machine.

dispensing valve parts Specifications

For related valves, fittings, tips, and service items, browse dispensers, mixers, and nozzles. Current manufacturer information is available from Techcon.

Need Help?

Need help confirming a seal for a TS5440 valve or service kit? Call (800) 220-1966 or email [email protected].