Avoid delays and equipment damage with the right O-ring assortment kit.
An O-ring assortment kit provides multiple seal sizes in one box, making it essential for maintenance, repair, and industrial sealing.

From DIY repair to industrial maintenance, here’s why having a full O-ring kit is one of the smartest decisions you can make.

What is an O-Ring Assortment Kit and Why Do You Need One?

Missing the right seal size can delay repairs—assortment kits solve this.

An O-ring assortment kit contains various sizes of O-rings used across applications like ഹൈഡ്രോളിക് സിസ്റ്റങ്ങൾ, plumbing, and automotive engines. It prevents downtime and eliminates the need to source individual seals.

A typical kit includes 100 to 400+ O-rings made of materials like nitrile, FKM, or EPDM. The idea is simple: always have the right size at hand. For example, a 419-piece universal assortment might feature nitrile O-rings from 3 mm to 50 mm inner diameters in over 30 size options. Whether you're sealing a high-pressure hydraulic fitting or fixing a fuel injector, a reliable assortment is the most efficient solution.

Which Materials Are Common in O-Ring Assortment Kits?

Choosing the right material matters for performance and longevity.

Most O-ring assortments use common elastomers like nitrile, FKM, EPDM, and silicone. Each offers specific resistance properties suited for different applications.

If you're working with hot fluids or in chemically aggressive environments, opt for FKM assortments. For plumbing or steam systems, EPDM is more cost-effective.

How Many O-Rings Come in a Kit & What Sizes?

Expect anywhere from 100 to over 400 O-rings in a standard kit.

A well-rounded kit typically includes sizes ranging from 6 mm to 50 mm inner diameter and section widths from 1.5 mm to 3.53 mm.

Take the 419-piece BUNA-N kit as an example. It includes:

• 32 common sizes, from R-01 to R-32
• Professional-grade ASTM D-2000 spec
• Applications in automotive repair, machinery, and OEM maintenance

This setup ensures that even if you're sealing a pressure washer or a rotary shaft, you’ll have the right O-ring ready.

What Are the Most Common Applications for O-Ring Assortments?

O-ring kits serve across various sectors, from home repairs to OEM factories.

O-ring assortments are indispensable in:

• Engine gaskets and fuel injectors
• Pneumatic/hydraulic actuators
• Faucet seals and pipe couplings
• Industrial maintenance kits

They’re frequently paired with O-ring assortment boxes in field service toolkits. Mechanics, HVAC technicians, and factory maintenance crews all rely on these kits to reduce system failure and maintain sealing integrity.

How Do You Choose the Right O-Ring Assortment Kit?

It comes down to three factors: material, range, and brand reliability.

ഇതിനെ അടിസ്ഥാനമാക്കി തിരഞ്ഞെടുക്കുക:

• Application-specific material (NBR, FKM, etc.)
• Number of sizes & pieces
• Quality control and packaging

Well-organized kits with labeled compartments and certifications like ASTM or SAE J200 offer the most reliability. If you're working in high-pressure environments, ensure your kit aligns with specifications from your equipment manual or supplier.

Where to Buy High-Quality O-Ring Assortment Kits?

Hengoseal offers OEM-grade O-ring kits with fast global delivery and low MOQs.

We supply assorted O-ring kits in nitrile, EPDM, silicone, and FKM materials tailored for professional and industrial use. Whether you need food-grade silicone rings or high-temp Viton kits, Hengoseal has a solution.

📩 Mail:[email protected]
📞 WhatsApp：+86 17622979498

Related topic

• How to Select the Best O-Ring for Your Needs
• Choosing Buna O Rings for Oil Sealing
• O-Ring Pricing & Selection Guide

ആളുകൾ ഇതും ചോദിക്കുന്നു