03-21-2024, 04:24 PM
The first number is McMaster's catalog number the second number would be the manufacturer's number which could be different depending on who supplied the last batch of o-rings of that particular size. If the size is correct you're golden.
Steve & Doris Denton
45' Newell #525, Bath & Half
2014 Honda CRV Toad
Summerfield, FL