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194-8128 1948128 Heavy‑Duty NBR & Steel Piston Ring Seal for CAT D11 Balance Beam D11R, D11T

Name: 194-8128 1948128 Heavy‑Duty NBR & Steel Piston Ring Seal for CAT D11 Balance Beam D11R, D11T
Brand: Guangzhou Opal Machinery Parts Operation Department
SKU: 194-8128
Price: 1.50 USD
Availability: InStock

Product Details

Place of Origin: China

Brand Name: OUB

Certification: ISO9001

Model Number: 194-8128

Payment & Shipping Terms

Minimum Order Quantity: 10

Price: Negotiable

Packaging Details: PP Bag Inside.outer is carton with film wrapped.

Delivery Time: Within 5-15 days after getting your desposit

Payment Terms: L/C,D/A,D/P,T/T,Western Union

Supply Ability: 1000Pcs

Get Best Price

Product Details

Product Description

Product Details

Highlight: 
                                                                                                                                                                                                                                                                                CAT D11 heavy-duty piston ring seal, NBR steel piston seal for D11R, D11T balance beam piston ring
                              

Part No.::	194-8128	Size:	105.91 Mm
Part Name::	SEAL	Model:	D11R, D11T
Machine:	Crawler Tractor	Material:	High‑strength Steel Reinforced
Color:	BLACK

Part No.::	194-8128
Size:	105.91 Mm
Part Name::	SEAL
Model:	D11R, D11T
Machine:	Crawler Tractor
Material:	High‑strength Steel Reinforced
Color:	BLACK

Product Description

1. Quick Details of seal 194-8128:

Part NO.	194-8128
Machine	Crawler Tractor
Size	OEM
Material	High‑strength Steel Reinforced
Oil seal type	rubber and steel

2. 194-8128 parts on group :

194-8128 1948128 Heavy‑Duty NBR & Steel Piston Ring Seal for CAT D11 Balance Beam D11R, D11T 0

NO.	PART NO.	PRAT NAME	QTY
1	3B-8489	FITTING-GREASE (1/8-27 PTF)(EQUALIZER BAR	2
2	5P-7151	RING-RETAINING	4
3	8P-8796	SEAL AS	1
4	8P-8797	SEAL AS	1
5	129-4487	BUSHING	2
6	133-5631	PLUG	2
7	159-9311	BEARING	2
8	194-8128	SEAL AS	4
9	2F-5326	SETSCREW (3/8-16XO.375-IN)	8
10	3J-7354	SEAL-O-RING	2
11	5F-1678	SEAL-O-RING	2
12	7X-0323	BOLT (1/2-13X0.5-IN)	4
13	8T-4223	WASHER-HARD (13.5X25.5X3-MM THK)	4
14	95-8002	PLUG (7/16-20-THD)	2

3. 194-8128 picture:

194-8128 1948128 Heavy‑Duty NBR & Steel Piston Ring Seal for CAT D11 Balance Beam D11R, D11T 1
4. Service part number :

PART NO.	PART NO.	Part NO.
8C5175	5K-9090	8M4390
1H7339	5P-2235	9X4611
8T9528	1T-0132	2256948
5K5129	9X-7735	1J2150
5D-7523	095-1751	1142687
2D-6533	095-1586	1173036
8M-4389	095-1608	6V6228
9H-3360	367-8471	5J2974
6F-8146	367-8472	1362967
3D-8422	095-1587	6V3251
6V-1196	095-1603	6J2419
161-9835	5P5874	3511768

5. FAQ

Q: Could you explain the material structure and why NBR with steel reinforcement is chosen?
A: It’s a composite structure: a rigid steel inner ring for structural support, overmolded with high‑grade NBR rubber. The steel core prevents deformation under heavy torque and pressure. The NBR outer layer provides elasticity, excellent oil resistance, and wear resistance. Together, they handle dynamic swing motion and harsh contaminants without cracking or leaking.

Q: What color, finish, and physical features does this seal have?
A: The seal is solid black with a smooth, slightly matte NBR surface—no gloss, which improves grip in the groove. The inner steel ring is dark gray with a clean, machined edge. It has precise chamfers on both sides for easy, damage‑free installation. The overall texture is firm yet flexible, with uniform thickness.

Q: How is this swing piston ring seal different from standard engine piston rings?
A: Engine rings seal high‑temperature combustion gas at high speed. The 194-8128 is a low‑speed, heavy‑load swing seal for undercarriage articulation. It seals grease, not gas, and withstands lateral torsion, vibration, and extreme abrasion. Its cross‑section is thicker, and it uses rubber‑steel composite instead of cast iron or chrome plating.

Q: What common issues happen if you use a low‑quality replacement seal here?
A: Cheap seals use poor‑grade rubber that hardens quickly and thin steel that bends. They leak grease within hundreds of hours, causing the balance beam joint to seize. This leads to stiff steering, uneven track tension, accelerated undercarriage wear, and even cracked balance beams—costing thousands in downtime and repairs.

6. Exhibition and Wearhous

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194-8128 1948128 Heavy‑Duty NBR & Steel Piston Ring Seal for CAT D11 Balance Beam D11R, D11T

CAT D11 heavy-duty piston ring seal

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Valve Pusher

Gasket Kit

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