John Crane Type 6 Elastomer Bellows Mechanical Seal

AES B07X Pump Mechanical Seal Replacement Copy

John Crane Type 6 Elastomer Bellows Mechanical Seal

The John Crane Type 6 mechanical seal is a robust, high-performance sealing solution widely used in centrifugal pumps handling water, mild chemicals, and general industrial fluids. The type 6 mechanical seal is a go-to choice for industrial pump applications where reliability and cost-effectiveness are key.

Model:2

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Key Features

• Direct OEM Replacement: A 100% compatible aftermarket replacement for the classic John Crane Type 6 mechanical seal.

• Unitized Construction: The John crane type 6 mechanical seal head is a single unitized assembly (bellow, spring, retainer, face), making installation fast and error-free.

• Versatile Application: Elastomer bellows mechanical seal are widely used in water, oil, and mild chemical pumps across general industry.

• Self-Aligning: The flexible elastomer bellow automatically compensates for shaft end-play, run-out, and primary sealing ring wear.

• Non-Clogging: The single coil spring is protected from the fluid, preventing clogging and corrosion.

Elastomer Bellows Mechanical Seal Technical Specs		Materials
Mediums	Water, oil and weakly-corrosive mediums	Stationary Ring	Ceramic/Sic/TC
Pressure	≤1.4MPa	Rotary Ring	Carbon/Sic/TC
Temperature	-20℃ to 120℃	Secondary Seal	NBR/EPDM/Viton
Speed	≤15m/s	Spring and Metal Part	Stainless Steel

Product Specifications

D1 (inch)	Size Code	D1 (mm)	Size Code	D3	D7	L1	L4
0.500	0127	12	0120	30.14	25.40	20.64	7.93
		14	0140	33.32	31.75	22.23	10.30
0.625	0158	16	0160	33.32	31.75	22.23	10.30
0.750	0191	18	0180	36.50	34.93	22.23	10.30
		20	0200	39.67	38.10	23.80	10.30
0.875	0222	22	0220	39.67	38.10	23.80	10.30
		24	0240	45.50	41.28	25.40	11.10
1.000	0254	25	0250	45.50	41.28	25.40	11.10
1.125	0286	28	0280	48.50	44.44	26.97	11.10
		30	0300	52.37	47.63	26.97	11.10
1.250	0317	32	0320	52.37	47.63	26.97	11.10
		33	0330	56.00	50.80	28.58	11.10
1.375	0349	35	0350	56.00	50.80	28.58	11.10
1.500	0381	38	0380	59.20	53.98	28.58	11.10
1.625	0412	40	0400	67.00	60.33	34.93	12.70
		43	0430	69.85	63.50	34.93	12.70
1.750	0444	45	0450	69.85	63.50	34.93	12.70
1.875	0476	48	0480	73.03	66.68	38.10	12.70
2.000	0508	50	0500	76.20	69.85	38.10	12.70
2.125	0539	53	0530	82.55	76.20	42.85	14.28
2.250	0571	55	0550	85.73	79.38	42.85	14.28
2.375	0603	60	0600	88.90	82.55	46.02	14.28
2.500	0635	63	0630	92.08	85.73	46.02	14.28
2.625	0666	65	0650	98.43	85.73	49.20	15.90
2.750	0698	70	0700	101.60	88.90	49.20	15.90
2.875	0730	73	0730	104.78	95.25	52.37	15.90
3.000	0762	75	0750	107.95	98.43	52.37	15.90

Workshop

This workshop is equipped with professional processing equipment and integrated with standardized material warehousing management, enabling a one-stop production process from precision machining to finished product delivery. It ensures John crane type 6 mechanical seal machining accuracy and production efficiency of elastomer bellows mechanical seal, meeting various high-specification manufacturing requirements.

Metal Bellows Seals for High Temperature Pumps 606

Product Research, Development and Testing

Our elastomer bellows mechanical seal Product R&D and Testing focuses on optimizing seal performance through advanced simulation and material analysis. All John crane type 6 mechanical seals undergo rigorous trials, including thermal cycling and pressure tests, to ensure durability, minimal leakage, and long service life in demanding industrial environments.

John Crane Type 6 Elastomer Bellows Mechanical Seal R&D and Design.jpg

elastomer bellows mechanical seal microscope.jpg

type 6 mechanical seal Light band detection.jpg

type 6 mechanical seal pressure test.jpg

Industry Solutions

Case Study

Automotive Cooling: Replaced OEM John crane Type 6 mechanical seals in an automotive engine test stand cooling circuit. Our kits offered identical performance at 40% of the cost, with immediate availability reducing downtime.

Testimonials

We keep these John crane Type 6 mechanical seal kits on the shelf. They are the universal fix for our older centrifugal pumps.

—Maintenance Supervisor, Manufacturing Plant

FAQs about John Crane Type 6 Elastomer Bellows Mechanical Seal

Q: Is this different from Type 21 mechanical seal?

A: Yes. John crane Type 6 mechanical seal is an older design often found in automotive and light-duty pumps. It is generally shorter and has a different drive mechanism than Type 21. Check your dimensions carefully.