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Style QR Buna-N Quattro Rings, -213 Size, 5 Per Pack

Description & Features

Designed for dynamic and static sealing applications, the Style QR Buna-N Quattro Rings, -213 Size, 5 Per Pack from Hercules Sealing Products offers a four-lobed profile that provides improved stability and reduced friction compared to standard round-profile seals. The quad ring design minimizes spiral twist in reciprocating applications, making it well suited for hydraulic cylinders, actuators, and rotary equipment.

Manufactured from Buna-N (nitrile) compound, these rings handle a temperature range of -40°F to 240°F and are compatible with petroleum-based hydraulic fluids, making them a reliable choice for demanding fluid power environments. The -213 dash size corresponds to nominal dimensions of 15/16 in. ID x 1 in. OD. Pressure performance varies according to diametral clearance. Sold in packs of five.

SKU: QR-4213

Supplier Part Number (MPN): QR-4213

Alternate Part Numbers: C1FC92, MI-01234974, MINO-00407X70529

Specifications

Alternate Part Numbers Alternate Part Number C1FC92, Alternate Part Number MI-01234974, Alternate Part Number MINO-00407X70529	Dash Size -213	Brand Hercules Sealing Products	Brand Hercules Sealing Products	Pack Size 1.00	UOM EA	Package Qty. 5	Supplier Part Number QR-4213	Product Weight 0.01 lbs

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QR-4112 Style QR Buna-N Quattro Ring	-112	5
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QR-4114 Style QR Buna-N Quattro Ring	-114	5
QR-4115 Style QR Buna-N Quattro Ring	-115	5
QR-4116 Style QR Buna-N Quattro Ring	-116	5
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QR-4210 Style QR Buna-N Quattro Ring	-210	5
QR-4211 Style QR Buna-N Quattro Ring	-211	5
QR-4213 Style QR Buna-N Quattro Ring	-213	5
QR-4214 Style QR Buna-N Quattro Ring	-214	5
QR-4215 Style QR Buna-N Quattro Ring	-215	5
QR-4216 Style QR Buna-N Quattro Ring	-216	4
QR-4217 Style QR Buna-N Quattro Ring	-217	4
QR-4218 Style QR Buna-N Quattro Ring	-218	4
QR-4219 Style QR Buna-N Quattro Ring	-219	4

Product Questions & Answers (2)

Question by: Clint T on Feb 27, 2026, 8:22 AM

Reckon these'll hold up alright in a hydraulic splitter I'm fixin'?

Answer by: Customer Support on Mar 1, 2026, 6:30 AM

These Buna-N quattro rings are a good fit for hydraulic cylinders. The Buna-N material works well with petroleum-based hydraulic fluids and handles temperatures from -40°F to 240°F.

Question by: Wayne S on Apr 3, 2026, 10:20 AM

these quad rings, are they gonna hold up in a hydraulic cylinder running petroleum-based fluid, or do i need something different for that?

Answer by: Customer Support on Apr 5, 2026, 6:59 AM

Buna-N is a solid match for petroleum-based hydraulic fluids, so you're in good shape there. The four-lobed profile on these also helps cut down on spiral twist in reciprocating applications like cylinders, which is one of the bigger failure points with standard O-rings in that kind of duty. As long as your temps stay in the range of -40°F to 240°F, these should perform reliably in that environment.