W20 Single spring mechanical seals replace Vulcan Diaphragm Type 20

Features

• Resilient single spring, rubber Diaphragm Seal
• Supplied with a Type 20 boot-mounted stationary as standard
• Designed to suit original common UK housing sizes.

Operating Limits

• Temperature: -30°C to +150°C
• Pressure: Up to 8 bar (116 psi)
• For full Performance Capabilities please download data sheet
Limits are for guidance only. Product performance is dependent on materials and other operating conditions.
d stationary to fit same housing sizes and working lengths.

Combination Materials

Stationary Ring: Ceramic/Carbon/SIC/SSIC/TC
Rotary Ring: Ceramic/Carbon/SIC/SSIC/TC
Secondary Seal: NBR/EPDM/Viton
Spring and Punched Parts:SS304/SS316

W20 data sheet of dimension(mm)

Size/Metric	D3	D31	D7	L4	L3
10	22.95	20.5	24.6	8.74	25.6
11	23.9	22.8	27.79	8.74	25.6
12	23.9	24	27.79	8.74	25.6
13	26.7	24.2	30.95	10.32	25.6
14	26.7	26.7	30.95	10.32	25.6
15	26.7	26.7	30.95	10.32	25.6
16	31.1	30.4	34.15	10.32	25.6
18	31.1	30.4	34.15	10.32	25.6
19	33.4	30.4	35.7	10.32	25.6
20	33.4	33.4	37.3	10.32	25.6
22	39.2	33.4	40.5	10.32	25.6
24	39.2	38	40.5	10.32	25.6
25	46.3	39.3	47.63	10.32	25.6
28	49.4	42	50.8	11.99	33.54
30	49.4	43.9	50.8	11.99	33.54
32	49.4	45.8	53.98	11.99	33.54
33	52.6	45.8	53.98	11.99	33.54
35	52.6	49.3	53.98	11.99	33.54
38	55.8	52.8	57.15	11.99	33.54
40	62.2	55.8	60.35	11.99	33.54
42	66	58.8	63.5	11.99	40.68
43	66	58.8	63.5	11.99	40.68
44	66	58.8	63.5	11.99	40.68
45	66	61	63.5	11.99	40.68
48	66.6	64	66.7	11.99	40.68
50	71.65	66	69.85	13.5	40.68
53	73.3	71.5	73.05	13.5	41.2
55	78.4	71.5	76	13.5	41.2
58	82	79.6	79.4	13.5	41.2
60	82	79.6	79.4	13.5	41.2
63	84.9	81.5	82.5	13.5	41.2
65	88.4	84.6	92.1	15.9	49.2
70	92.6	90	95.52	15.9	49.2
73	94.85	92	98.45	15.9	49.2
75	101.9	96.8	101.65	15.9	49.2