Cup Packing
Leather cup packings are dynamic seals shaped like a cup or dish to fit around pistons, plungers or similar reciprocating elements. Monarch-McLaren cup packings are used where motion and pressure interplay, such as in hoists, presses, hand pumps, and air engines.
Typical Applications
Ideal for industrial presses, well pumps, hand pumps, and legacy engines where a low-friction, self-adjusting seal is required.
Material & Impregnation
Natural leather cup packings can be treated with wax, silicone, Thiokol, and other impregnants to improve resistance to heat, wear, and moisture in demanding environments.
Key Benefits
- Custom sizes from ¼″ to 10″ and beyond.
- Leather’s flexibility helps adjust sealing contact with changes in load.
- Low friction reduces wear and increases longevity.
Why Leather Matters in Cup Packing
Leather cup packings form a responsive seal under motion, with the leather fibers flexing to maintain contact without scoring or premature wear common in harsher synthetic lip designs.
O.D.: Outside Diameter (Nominal O.D. of cup packing when installed)
H: Height of Packing
I.D.: Inside Diameter
T: Thickness
Ready to Get a Quote?
Tell us your application details and specifications so we can provide a custom estimate or consult on the right leather packing solution for your needs.
