The O-Ring 291.7x3.53 CR is a carefully dimensioned, durable neoprene sealing ring ideal for industrial, hydraulic, and pneumatic systems. It balances performance, lifespan, and cost-effectiveness for many medium-demand sealing tasks.
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The O-Ring 291.7x3.53 CR is a precision neoprene (CR) rubber gasket with an inner diameter of 291.7 mm and cross-section (thickness) 3.53 mm. In global searches, key phrases include “291.7x3.53 CR o-ring,” “neoprene O-Ring 291.7 3.53,” “O-ring CR 291.7x3.53,” and “291.7x3.53 neoprene seal.”
This type of seal is widely used in industrial sealing applications, particularly in hydraulic cylinders, pneumatic actuators, pump assemblies, valves, and static sealing interfaces. It is especially suitable where moderate chemical and oil resistance is required but full fluorocarbon performance is not necessary. The neoprene version is often chosen in systems exposed to moderate weather, ozone, or where sealing in medium-duty oil/grease environments is needed.
Material - CR (Neoprene): good balance of chemical resistance, ozone and weather tolerance, and mechanical stability.
Dimensional precision: 291.7 mm ID x 3.53 mm thickness ensures close fit and effective static sealing in groove arrangements.
Durable performance: Neoprene maintains elasticity and tight sealing over time, suitable for many industrial cycles.
Versatile integration: can be embedded in bearing housings, flange assemblies, pump covers, and static interfaces.
Cost-effective: offers a strong alternative to more expensive elastomers where full FKM capability isn’t required.
Moderate chemical resistance: effective against lubricants, oils, mild hydrocarbons, and many general chemicals.
| Parameter | Value / Typical Range |
|---|---|
| Inner Diameter (ID) | 291.7 mm |
| Cross-Section / Thickness | 3.53 mm |
| Material | Neoprene (CR) |
| Hardness | Typically ~ 70 Shore A (typical for CR versions) |
| Operating Temperature Range | -30 °C to +100 °C (depending on specific CR formulation) |
| Application Type | Static or low-dynamic sealing (hydraulic, pneumatic, industrial) |
| Common Roles | O-ring, rubber seal, static seal, industrial gasket |
While some O-rings of the same geometric size are offered in EPDM or FPM materials, the CR version remains a standard option in many inventories for general-purpose sealing. For example, suppliers list O-ring 291.7x3.53 - CR neoprene, 70 Shore A as a regular stock item.
Q: What does “CR” stand for in this O-ring?
A: CR means chloroprene rubber, often known as neoprene, offering durability, resistance to ozone, weather, and moderate oils.
Q: Is 291.7x3.53 CR suitable for hydraulic systems?
A: Yes, in many static or low-motion hydraulic applications, provided pressure and fluid compatibility are within neoprene’s limits.
Q: How does CR compare to NBR or FKM?
A: Compared to NBR, CR offers better weather and ozone resistance but slightly lower oil/chemical resistance. FKM (fluorocarbon) outperforms both in harsh chemical or high-temperature environments, but at much higher cost.
Q: What temperature range can this O-ring handle?
A: Typical CR compounds operate from roughly -30 °C to +100 °C, depending on the specific blend used.
Q: Can it be sourced quickly?
A: Yes — we maintain stock and offer 24h dispatch to serve urgent B2B needs.
Data sheet