Conical Spring Mechanical Seal

Conical Spring Mechanical Seals are designed with a conical-shaped spring that provides axial movement and maintains constant face loading for superior sealing performance, reduced wear, and longer service life in demanding industrial applications.

Constant
Face Loading

Low Wear &
Longer Life

Excellent
Sealing

High Pressure
Capability

Description

Conical Spring Mechanical Seals are engineered with a conical spring that offers excellent axial movement and maintains constant face contact across the entire sealing surface.

The conical spring compensates for wear, thermal expansion and pressure variations, ensuring reliable performance and extended seal life.

These seals are ideal for use in water, chemical, oil & gas, and general industrial applications.

Features

Conical spring ensures constant face loading
Better compensation for wear and misalignment
Reduced friction, heat generation and wear
High reliability in high pressure and temperature
Independent of direction of rotation
Suitable for a wide range of fluids and applications

Operating Conditions

Shaft Diameter	8 mm to 60 mm
Pressure	Up to 25 bar (362 psi)
Temperature	-20°C to +180°C
Sliding Velocity	Up to 20 m/s
Axial Movement	± 1.0 mm
Application	Water, Oils, Chemicals, Acids, Alkalis, Slurries and General Fluids

Technical Drawing

Specification

Part	Standard Material
Rotary Face	Carbon / SIC / TC
Stationary Face	Ceramic / SIC / TC
Secondary Seal	NBR / EPDM / FKM / PTFE
Conical Spring	SS 316 / Hastelloy C
Metal Parts	SS 304 / SS 316
Seat Type	Standard / Conical
Balance	Balanced
Direction of Rotation	Independent of Direction
Drive Type	By Conical Spring
Mounting	Pusher / Screw / Set Screw

Dimensional Data (mm)

d₁	d₅	d₄	d₅	d₇	l₁	l₂	l₃	l₄	l₅	l₆	l₇
8	12	16	13.0	13.1	19.5	5.5	32	4.5	1.2	2	3
10	16	20	13.0	17.1	20.5	5.5	35	5.5	1.2	3	3
11	20	22	14.0	18.1	20.5	5.5	35	5.5	1.2	3	3
12	22	24	16.5	20.6	23.5	5.5	38	5.5	1.2	3	3
13	22	26	16.5	20.8	23.5	5.5	38	5.5	1.2	3	3
14	24	38	19.0	22.1	26.0	6.0	40	6.0	1.2	3	3
15	24	30	21.0	22.1	28.0	6.0	40	6.0	1.2	3	3
17	26	32	21.0	26.9	28.0	7.0	45	7.0	1.5	4	4
18	28	33	21.0	26.9	30.0	7.0	45	7.0	1.5	4	4
19	32	38	25.0	30.3	32.0	8.0	50	8.0	1.5	4	4
19	32	38	25.0	30.8	33.0	8.0	50	8.0	1.5	4	4
20	34	38	25.0	30.9	33.0	8.0	50	8.0	2.0	4	4
24	36	41	30.0	36.7	35.6	8.0	53	8.0	2.0	4	4

Dimensional Data (mm)

d₁	d₅	d₄	d₅	d₇	l₁	l₂	l₃	l₄	l₅	l₆	l₇
24	39	45	35.0	38.7	36.1	8.5	55	8.5	2.0	4	4
25	39	46	35.0	38.2	36.1	8.5	55	8.5	2.0	4	4
28	42	46	35.0	33.1	36.5	8.5	55	8.5	2.0	4	4
32	44	60	38.0	43.3	38.0	9.0	58	9.0	2.0	4	4
32	46	60	42.0	43.3	38.0	9.0	58	9.0	2.0	4	4
35	50	60	45.0	53.5	60.5	11.5	70	11.5	2.0	6	6
40	54	68	52.0	60.6	60.5	11.5	70	11.5	2.0	6	6
42	58	60	57.0	60.5	63.5	11.5	72	11.5	2.0	6	6
45	60	72	67.0	66.5	62.5	11.5	72	11.5	2.0	6	6
48	63	72	67.0	66.5	62.5	11.5	72	11.5	2.0	6	6
50	65	75	67.0	66.5	62.5	11.5	72	11.5	2.0	6	6
60	70	85	80.0	80.5	82.5	11.5	80	11.5	2.0	6	6