Male Boss O-Ring

Supplier Part Number
90304-04D000-0
Product Weight
1.00 lbs

Product Questions & Answers

How often should I be replacing this o-ring in a hydraulic setup?
Question by: Lance G on Feb 23, 2026, 8:37 AM
For optimal performance, it's best practice to inspect the O-ring during routine maintenance of your hydraulic system. Replacement frequency depends on the severity of the operating conditions, but any sign of wear or degradation warrants immediate replacement to prevent leaks and maintain system integrity.
Answer by: Customer Support on Feb 24, 2026, 6:13 PM