Fitment： Part Number: 2701528 270-1528 For Caterpillar E200 320 336 345 350 365 374 395 Specification： Part Name: O-ring Box Application: Excavator Material: NBR+FKM+PTFE+PU Temperature: -35~220°C(According to material) Hardness: 60-90 Shore A Feature: Oil-resistant, Heat resistant, Pressure resistant, Durable .