PTFE Split Flat Washers

An uninterrupted washer must pass over the shaft end or be installed before surrounding components. A split washer gives the assembly a different installation route where the design provides room to open and position the ring.

PTFE is a plastic ring material, so limit opening to the movement required by the assembly. Excess bending can leave a permanent set. Identify the required assembly path on the drawing when the ring must pass an obstruction or enter a confined groove.

The cut does not turn a PTFE flat washer into a metal spring-locking device. Use it for the defined spacing, separation or support function, with any required preload provided by the surrounding assembly.

A cut also creates a possible leakage path. Where the ring supports a pressure seal or acts as a designed backup component, specify the groove, extrusion clearance and cut arrangement. The three ring dimensions alone do not define a pressure-sealing profile.

CP-SR-3X5X1 defines a 3 mm inner diameter, 5 mm outer diameter and 1 mm axial thickness. The cut angle, end gap and chamfers are additional features. A 70° cut description needs an angle datum so the drawing and inspection use the same convention.

The listed size references are manufactured to dimensions. For repeat orders, retain the cut detail and drawing revision with the SKU, especially where a support ring must match an existing seal groove.

• Record d × D × T and the required quantity.
• Show cut angle, datum, gap and any edge breaks.
• For seal-support duty, include the mating groove and clearance section.