4200-70 Nitrile Seals

Datwyler is committed to being the leader in general-purpose nitrile seals. Because nitriles are versatile and inexpensive, they are the most popular industrial seal material. More than 50 percent of sealing needs can be met using nitrile. Datwyler recommends that you follow the general rule: consider nitrile first.

4200-70 Meets Your Needs

1. Excellent Physical Properties

Datwyler’s 4200-70 70-durometer nitrile O-rings have excellent physical properties. For nearly 40 years, 4200-70 O-rings have been used in a wide variety of applications with great results. So when you specify 4200-70, rest assured that you’ve made the right choice.

2. Enhanced Resistance to Compression Set

To perform properly, seals must resist taking a set from compression after being installed. When a seal takes a set, it no longer exerts force on the mating surfaces, resulting in leakage. A compound with low compression set, like 4200-70, better maintains its elastomeric properties and original thickness, preserving seal integrity. Seals made from Datwyler’s 4200-70 compound provide excellent resistance to compression set. After testing 4200-70 for 22 hours at 212°F, it had a compression set of only 6 percent.

3. Very Good Resistance to a Variety of Fluids

Nitrile compounds, like 4200-70, provide very good service in gasoline, crude oil, power steering fluid, hexane, toluene, water, water-based hydraulic fluids, and dilute bases such as sodium hydroxide.