Product details of the seal kit manufacturer
Product Overview
Our professional inspectors and workers ensure the whole production process of FOREVER SEALS seal kit manufacturer proceed well. The improved quality management system guarantees the higher quality of this product. The seal kit manufacturer of FOREVER SEALS can be used in many industries. FOREVER SEALS TECHNOLOGY.,LIMITED always actively solves customer problems and provide quality services.
Product Introduction
Compared with other products in the same category, seal kit manufacturer produced by FOREVER SEALS has the following advantages.
1. Product Advantages (Forever Seals Exclusive)
Caterpillar-Certified Compatibility: Meticulously engineered to match CAT-4C8253 specifications, ensuring 100% fit for Caterpillar machinery—no mismatches or performance gaps.
Durable Material: Made with high-grade nitrile rubber (NBR) by Forever Seals, resistant to oil, heat (up to 120°C/248°F), and hydraulic fluids, delivering 2x longer service life than generic O-rings.
All-in-One Convenience: Includes 15+ assorted O-rings (sizes below) + a precision installation tool, eliminating the need to source parts separately—saves 50% of maintenance time.
Cost-Effective: Reduces downtime by 30% (quick access to replacement parts) and cuts long-term repair costs vs. single-O-ring purchases.
2. Working Principle
O-rings in the CAT-4C8253 kit create a tight, pressure-activated seal between two mating surfaces (e.g., hydraulic valves, pneumatic cylinders). When compressed, the nitrile rubber deforms to fill gaps, blocking fluid/gas leakage. Forever Seals’ material ensures consistent elasticity even under cyclic pressure, maintaining sealing integrity for extended use.
3. Product Details
Packaging: Sturdy, labeled plastic case with size-divided compartments—prevents loss and enables quick size identification.
Tool Inclusion: Ergonomic silicone-grip O-ring pick tool (length: 12cm) for safe removal/installation, avoiding damage to seals or machinery.
Quality Assurance: Each O-ring undergoes 3-step testing (dimensional accuracy, elasticity, chemical resistance) by Forever Seals’ ISO 9001-certified facility.
4. O-Ring Sizes (Metric)
| CAT O-RING KIT 4C8253 |
| Ttem |
NO |
Specification |
RTT |
| 1 |
8M8157 |
9.19x2.62 |
5 |
| 2 |
8M4437 |
13.94x2.62 |
10 |
| 3 |
8M4438 |
17.12x2.62 |
5 |
| 4 |
8M4389 |
20.29x2.62 |
5 |
| 5 |
8M8283 |
21.89x2.62 |
3 |
| 6 |
8M8515 |
32.99x2.62 |
5 |
| 7 |
8M4435 |
18.64x3.53 |
5 |
| 8 |
8M4445 |
21.82x3.53 |
5 |
| 9 |
8M4446 |
23.39x3.53 |
5 |
| 10 |
8M4988 |
24.99x3.53 |
5 |
| 11 |
8M4432 |
26.57x3.53 |
5 |
| 12 |
8M5248 |
28.17x3.53 |
5 |
| 13 |
8M5254 |
31.34x3.53 |
5 |
| 14 |
8M4987 |
32.92x3.53 |
10 |
| 15 |
8M5249 |
34.52x3.53 |
5 |
| 16 |
8M4986 |
37.69x3.53 |
10 |
| 17 |
8M4992 |
40.87x3.53 |
3 |
| 18 |
8M4443 |
44.04x3.53 |
3 |
| 19 |
8M5661 |
47.22x3.53 |
3 |
| 20 |
8M4436 |
50.39x3.53 |
3 |
| 21 |
8M5010 |
53.57x3.53 |
3 |
| 22 |
8M4390 |
56.74x3.53 |
3 |
| 23 |
8M5252 |
66.27x3.53 |
3 |
| 24 |
8M4990 |
15.24x5.33 |
3 |
| 25 |
1S0004 |
18.42x5.33 |
5 |
| 26 |
9H6067 |
21.59x5.33 |
5 |
| 27 |
9M4849 |
23.16x5.33 |
5 |
| 28 |
8M4991 |
27.94x5.33 |
3 |
| 29 |
9M7002 |
37.46x5.33 |
3 |
| 30 |
9M9647 |
40.64x5.33 |
3 |
| 31 |
2S2251 |
43.82x5.33 |
5 |
| 32 |
6L1651 |
50.17x5.33 |
3 |
5. Application Range
Exclusively for Caterpillar equipment, including:
Construction machinery (excavators, loaders: e.g., CAT 320, 966M)
Agricultural machinery (tractors, harvesters: e.g., CAT Challenger MT800)
Mining equipment (dump trucks, drills: e.g., CAT 793F)
Hydraulic/pneumatic systems in Caterpillar industrial engines
6. FAQ
Q1: Is this kit compatible with non-Caterpillar machinery?
A1: No—designed strictly for CAT models matching CAT-4C8253 specs; contact Forever Seals for custom kits for other brands.
Q2: How to store the kit for maximum O-ring life?
A2: Keep in a cool (15–25°C), dry place; avoid direct sunlight or contact with solvents.
Q3: Does Forever Seals offer a warranty?
A3: Yes—12-month warranty against material defects; free replacement if O-rings fail under normal use.
7. Forever Seals Selling Points
20+ years of expertise in industrial sealing solutions, specializing in Caterpillar aftermarket parts.
Global shipping with 48-hour dispatch for urgent maintenance needs.
Technical support team available 24/7 to assist with size selection or installation queries.
Company Introduction
FOREVER SEALS TECHNOLOGY.,LIMITED is a comprehensive enterprise in Our company implements management on the production, processing, sales and scientific research, with the main focus on SEALS,O-RINGS. In the future, our company would continue to carry out the operation concept of 'excellence-seeking, quality first, customers first and honesty-based'. We focus on customers and provide quality products and services on the basis of talents and technology. Our company now has a team of first-rate talents who contribute to the research and development and production of our products. FOREVER SEALS has professional engineers and technicians, so we are able to provide one-stop and comprehensive solutions for customers.
With rich experience and exquisite technology, we are looking forward to building good cooperation with partners from all walks of life and creating a better tomorrow!
