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Fully Enclosed Rubber Joint

FYL is a comprehensive water conservancy equipment manufacturer with a wide range of products, including fully enclosed rubber joint. This is a pipe system connector made of high-quality rubber material with excellent sealing performance. At the same time, we also strengthen its anti-oxidation and anti-corrosion properties during production to extend its service life. If you have specific needs, you can contact us immediately to get the latest quotation and customized service support.

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Product Description

The FYL Fully Enclosed Rubber Joint is a high-performance, maintenance-free flexible pipe connector engineered for demanding industrial applications.

Manufactured by FYL using highly elastic, weather-resistant rubber reinforced with multi-layer fabric or metal cord, the joint provides exceptional displacement compensation, vibration absorption, and noise reduction. It is designed to significantly lower long-term pipeline maintenance costs while maintaining stable operation under harsh conditions—including temperature extremes, chemical exposure, and continuous dynamic loads.

Every unit undergoes factory pressure, airtightness, aging, and flexural fatigue testing to guarantee consistent quality upon delivery.

	Design install dimension					Number Holes			Hole Diameter			Bolt Circle Diameter
	Rubber telescopic device (shock absorber)					Pressure Level
	L mm	Elongate mm	Compress mm	Lateral displacement	Deflection angle °C	6	10	16	6	10	16	6	10	16
50	105	7	10	10	15	4	4	4	13.5	17.5	17.5	110	125	125
65	115	7	13	11	15	4	4	4	13.5	17.5	17.5	130	145	145
80	1335	8	15	12	15	4	4	8	17.5	17.5	17.5	150	160	160
100	150	10	19	13	15	4	8	8	17.5	17.5	17.5	170	180	180
125	165	12	19	13	15	8	8	8	17.5	17.5	17.5	200	210	210
150	180	12	20	13	15	8	8	8	17.5	22	22	225	240	240
200	210	16	25	20	15	8	8	12	17.5	22	22	280	295	295
250	230	16	25	20	15	12	12	12	17.5	22	26	335	350	355
300	245	16	25	20	15	12	12	12	22	22	26	395	400	410
350	255	16	25	20	15	12	16	16	22	22	26	445	460	470
400	260	16	25	20	15	16	16	16	22	26	30	495	515	525
450	260	16	25	20	15	16	20	20	22	26	30	550	565	585
500	260	16	25	20	15	20	20	20	22	26	33	600	620	650
600	260	16	25	20	15	20	20	20	26	30	36	705	725	770
700	260	16	25	20	15	24	24	24	26	30	36	810	840	840
800	260	16	25	20	15	24	24	24	30	33	41	920	950	950
900	260	16	25	20	15	24	28	28	30	33	41	1020	1050	1050
1000	260	16	25	20	15	28	28	28	30	34	48	1120	1160	1170
1200	260	16	25	20	15	32	32	32	33	41	54	1340	1380	1390
1400	360	20	28	25	15	36	36	36	36	42	54	1560	1590	1590
1600	360	20	28	25	15	40	40	40	36	48	58	1760	1820	1820
1800	360	20	28	25	15	44	44		41	54		1970	2020
2000	420	25	35	30	15	48	48		48	54		2180

Core Technological Advantages

1. Fully Enclosed Sealing Structure
Zero exposed sealing surfaces. Uniform pressure distribution eliminates leak paths even under continuous operation or pressure surges.

2. High-Strength Reinforcement Layer
Built-in multi-layer polyester cord or steel wire skeleton significantly improves tensile strength, compressive resistance, and deformation recovery.

3. Specialized Rubber Formulation
Resistant to temperature extremes, oil, dilute acids/alkalis, ozone, and aging. Service life exceeds ordinary rubber joints by 30%+.

4. Multidimensional Displacement Compensation
Simultaneously accommodates axial, lateral, and angular pipe movement—ideal for installation deviations and thermal expansion/contraction.

5. Vibration & Noise Reduction
Effectively absorbs pump and valve vibrations, lowers pipeline noise, and protects connected equipment from dynamic stress.

6. Maintenance-Free Design
No routine servicing required. Reduces system downtime, replacement frequency, and total cost of ownership.

Product Structure

Layer	Function
Main Rubber Layer	Provides elasticity, sealing, and medium resistance (water, oil, weak acid/alkali, steam, etc.)
Reinforcing Skeleton Layer	Enhances burst pressure rating, dimensional stability, and mechanical strength
Fully Enclosed Protective Layer	Isolates against external corrosion, UV radiation, and mechanical abrasion

All three layers are integrally vulcanized—no glue joints or mechanical fasteners that could become failure points.

Production & Quality Control (FYL Workshop Standards)

Facility: Standardized workshop with automated batching, mixing, and vulcanization lines.
Inspection Chain:Raw material testing → In-process parameter monitoring → 100% finished product inspection.
Mandatory Factory Tests:Pressure resistance (1.5× rated pressure)Airtightness (submerged air test)Accelerated aging (thermal/ozone)Flexural fatigue (cyclic deflection)
Traceability: Material certificates, detailed test reports, and Certificates of Conformity available per batch.

Every FYL Fully Enclosed Rubber Joint is verified to meet or exceed design standards before leaving the factory.

Frequently Asked Questions (FAQ)

Q1: What media can the Fully Enclosed Rubber Joint handle?
A: Standard versions suit water, sewage, air, hot oil, weak acids, weak alkalis, and steam. Custom compounds available for aggressive chemicals or food-grade applications.

Q2: How do I select the correct pressure rating?
A: Standard ratings: 1.0 MPa / 1.6 MPa. High-pressure variants (2.5 MPa and above) are available upon request for hydraulic or industrial process lines.

Q3: Do you support non-standard sizes or flange standards?
A: Yes. FYL produces according to GB, ANSI, DIN, JIS, and other international flange standards. Custom dimensions and drilling patterns also accepted per drawing.

Q4: What is the expected service life?
A: ≥10 years under normal operating conditions. The fully enclosed design and specialized rubber compound deliver >30% longer life than conventional rubber joints.

Q5: Does FYL provide OEM/private label services?
A: Yes. OEM/ODM fully supported—brand marking, custom packaging, specification modifications, and even dedicated production lines for volume orders.

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