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Diaphragm, Buna-N

Brand Ingersoll-Rand Industrial US	Brand Ingersoll-Rand	Pack Size 1.00	UOM EA	Supplier Part Number 90533-2	Alternate Part Numbers Alternate Part Number C1CB72	Product Weight 0.33 lbs

Product Questions & Answers 2

Product Questions & Answers

replacement diaphragm for an ARO pump - this the buna-n version made by Ingersoll Rand?

Question by: Lee M on Dec 21, 2025, 1:02 PM

Correct. Catalog number C1CB72 is the Buna-N diaphragm for ARO pumps, manufactured under the Ingersoll-Rand brand. The supplier part number is 90533-2, so if you're cross-referencing against an existing parts list or purchase order, either number will pull up the same component.

Answer by: Customer Support on Dec 23, 2025, 6:23 AM

Is this diaphragm made of Buna-N rubber? Just want to be sure before I order.

Question by: Lee H on Jul 11, 2025, 6:50 PM

That's right, this diaphragm is made from Buna-N.

Answer by: Customer Support on Jul 13, 2025, 11:15 AM