How to Grease Your O-ring Properly

Each Peli case comes with an O-ring in the lid to seal out any water, dust or debris. This O-ring maintains a watertight, dustproof seal that protects the precious cargo you carry inside.

It is made of EPDM or Ethylene Propylene Diene Monomer, which is well-known for its excellent heat, ozone and weather resistance. EPDM is extremely resistant to water and steam and maintains its flexibility even at low temperatures. For this reason, it has a wide range of applications and is excellent for use outdoors.

EPDM features outstanding resistance to alkalis, acids and oxygenated solvents, but is not recommended for resistance to oil, gasoline and hydrocarbon solvents. You should use only silicone grease lubricants to maintain the life of the O-ring and preserve the watertight properties of your case. To maintain the top level protection of your case, damaged O-rings should be replaced.

To see featured replacement options and all of our Case accessories, visit our website here.

Originally published on 12 May 2014

Updated on 18 June 2019

PELI products are engineered for life.

PELI protects what matters to you, through the harshest conditions, from the everyday to the extraordinary.

Proudly manufactured in the U.S., UK and Germany, Peli Products are proven in the harshest environments: aerospace, oil/gas, industrial, scientific, fire/safety, law enforcement, military, photography, broadcast and outdoor adventurers.

Legendary protection for over 40 years. Rugged. Trusted. Uncompromising.

Peli products are built to the highest and most demanding standards. Constantly evolving, always exceeding expectations.

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