Epdm Silicone NBR Rubber Stopper With Hole Cone Shape High Temperature Resistance

1: Express: S.F. ,DHL,UPS, TNT, FedEx ect, for urgent and small order.

2: Air shipment: air port to air port , or air port to door.

3: Sea shipment: suitable for bulk goods. it will takes more longer time than air shipment.

1. What dimensions define a cone-shaped stopper?
Provide top and bottom diameters and overall height, together with the mating opening and insertion depth. A nominal diameter alone does not define the tapered fit.
Include dimensional tolerances and a sample or section drawing when the opening has an internal taper or an irregular contact surface.
2. How should a hole be specified?
a. State the hole count, diameter, center position and spacing.
b. Identify the tube, cable or probe diameter and the required fit.
c. Agree the hole-making method and acceptable edge condition before sample approval.
d. Specify whether the hole passes through the entire stopper.
e. Include insertion and removal requirements for the mating component.
f. Review wall thickness around each hole against the drawing.
g. Define any leakage or retention test for the complete assembly.
3. Can EPDM, silicone and NBR use the same specification?
1. Each compound needs its own fluid and temperature review.
2. Provide normal and peak temperatures and exposure duration.
3. Identify cleaning chemicals and any repeated heating cycle.
4. Specify the chosen nominal hardness within the listed 40–80 Shore A range.
5. Agree tolerances and test conditions for that compound.

4. What should accompany an enquiry?
1. A dimensioned cone-profile drawing or original sample.
2. Hole layout and mating tube or probe details.
3. Compound, hardness and color requirements.
4. Quantity, packing and delivery requirements.
5. Required dimensional inspection and assembly acceptance criteria.

For a rubber bung quotation, include the top and bottom diameters, height and hole drawing with the intended fluid and temperature conditions.

Custom stoppers can be reviewed from a dimensioned drawing or original sample; confirm fit on a trial assembly before approving the production specification.