Pentek 151122 O-Ring for 10" & 20" Big Blue

Good fit

Fits perfectly as 151122 unlike other brands

This is the Only O-ring that is an OEM exact fit for the Pentek/Pentair Big Blue filter housings. While many online vendors advertise equivalents for part# 151122, they vary widely in exact measurements. The OEM cross sectional dimension of . 180" is critical. After receiving o-rings from another vendor that measured . 165", they actually told me, "don't worry they swell when they get wet. " If you think about it, for a specified ID x OD, if you change the cross sectional diameter (thickness) of the ring material, one of the other numbers must change. In the worl of o-rings, . 015" makes a big difference.

Great customer service

I was kept informed of my order status at all times. they followed up as well to confirm the order delivered on time and was exactly what i needed