HERCULES METRIC O-RING MOR-40X3

Specifications

Alternate Part Numbers Alternate Part Number C1KW37	Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Supplier Part Number MOR-40X3	Product Weight 0.01 lbs

Product Questions & Answers 3

Product Questions & Answers

Got a metric cylinder on an older piece of equipment that needs a new seal, the bore takes a 40mm ID with a 3mm cross section. This the right part?

Question by: Johnny R on Sep 18, 2025, 3:29 PM

For a 40mm inner diameter with a 3mm cross-section, MOR-40X3 is exactly what you're after. Hercules Sealing Products makes this as part of their metric O-ring series, so the dimensions are built to metric standard. Works for both static and dynamic sealing setups, which covers most cylinder and fitting applications you'd run into on metric-spec equipment.

Answer by: Customer Support on Sep 19, 2025, 7:41 PM

So this is for hydraulic stuff that uses metric sizes, right? Just want to make sure before I order.

Question by: Sherry S on Nov 3, 2025, 7:41 AM

Correct, this O-ring from Hercules Sealing Products is specifically designed for hydraulic and industrial applications that require metric-dimensioned components. The 40 x 3 mm sizing confirms it's intended for metric-standard cylinders, fittings, and valve assemblies.

Answer by: Customer Support on Nov 5, 2025, 6:27 AM

got a metric groove that calls for a 40 x 3 o-ring. is that the same size as this one?

Question by: Lynn R on May 15, 2025, 10:18 AM

The 40 x 3 mm size means a 40 mm inner diameter with a 3 mm cross section, which matches the common way metric O-rings are specified for grooves and parts.

Answer by: Customer Support on May 16, 2025, 3:12 PM