Rothkopf delivered our first O-ring in 1956. In the decades since, our experienced team has continued to earn the trust of our customers by providing superior quality parts and excellent customer service. Learn more about the part that started it all for us—the O-ring—below.
Your Source for O-Rings
The first part we ever worked with was the O-ring back in the 1950s. It is the most common fluid seal, called “O” for its round cross-section profile. O-rings create a seal at the interface between two or more components where they are seated in a groove and compressed during assembly. They perform well in both static and dynamic applications. They are simple and basic items, but that doesn’t change how critical their performance is in a variety of applications. If there’s air, gas, or fluid in it or flowing through it, there are O-rings in it. Often, O-rings are among the lowest cost components in the application, but will likely be the most visible should they fail.
O-rings are widely available in many standard sizes and general-purpose compounds. Identifying the appropriate compound for any application is dependent on various unique and often competing criteria. Call us, or fill out our Request a Quote form, and we’ll help get you started.
Superior quality parts, every time.
Our parts comply with industry and agency standards as indicated:
Buna N/Nitrite
Ethylene Propylene
Fluorocarbon
Fluorosilicone
Hydrogenated Nitrile
Neoprene
Silicone
Teflon
Polyurethane
GLT/GFLT
Custom Formulated
Our parts comply with industry and agency standards as indicated:
Mil-Aero/GPL
NSF
FDA
UL Listed
OEM specified approvals
Product finishing options include:
Teflon Coating (PTFE Resin)
Internal/External Lubrication
Color Coding
O-ring sizes we carry:
Standard
Metric
