HexaTech 502

The Hexatech 502 is a compact, unbalanced, single-spring elastomer bellows mechanical seal designed to DIN 24960 / EN 12756 standards. Engineered for media containing solids, slurries, or light contaminants, its convolution bellows design eliminates sliding dynamic O-rings directly on the shaft—preventing shaft fretting, hang-ups, and premature wear.

Key Specifications & Features

Non-Clogging Bellows Construction
Flexible convoluted rubber bellows isolates the shaft, delivering continuous sealing without scoring or fretting.
DIN / ISO Standard Compatibility
Built for standardized stuffing boxes with fixed working length dimensions (ST'L', ST.STEP "L", and ROTARY LENGTH).
Bidirectional Operation
Independent of the direction of shaft rotation, ensuring simple installation and reliable performance.
Self-Aligning Profile
Readily absorbs shaft deflections, radial runout, and minor angular misalignments.

SEAL SIZE	ROTARY OD	ST.OD	ROT ARY L	ST L(STEP)	ST LENGT H
14	24	25	23	12	12.8
16	26	27	23	12	12.8
18	32	33	24	13.5	14.5
20	34	35	24	13.5	14.5
22	36	37	24	13.5	14.5
24	38	39	26.7	13.3	14.3
25	39	40	27	13	14
28	42	43	30	12.5	13.5
30	44	45	30.5	12	13
32	46	48	30.5	12	13
33	47	48	30.5	12	13
35	49	50	30.5	12	13
38	54	56	32	13	14
40	56	58	32	13	14
43	59	61	32	13	14
45	61	63	32	13	14
48	64	66	32	13	14
50	66	70	34	13.5	14.5
53	69	73	34	13.5	14.5
55	71	75	34	13.5	14.5
58	78	78	39	13.5	14.2
60	80	80	39	13.5	14.2
63	83	83	39	13.5	14.2
65	85	85	39	13.5	14.2
68	88	90	39	13.5	14.2
70	89	92	45.5	14.5	15.2
75	96	97	45.5	14.5	15.2
80	104	105	45	15	15.7
85	108	110	45	15	15.7
90	114	115	50	15	15.7
95	118	120	50	15	15.7
100	124	125	50	15	15.7

Specification:

No.	DESCRIPTION	MATERIAL
1	O ring	NBR / VITON
2	Stationary ring	Alumina ceramic / SIC
3	Rotary ring	Graphite carbon / SIC
4	Retainer	SUS304
5	Bellows	NBR / VITON
6	Closing ring A	SUS304
7	Closing ring B	SUS304
8	Spring	SUS304
9	Spring seat	SUS304

Application:

PARAMETER	SPECIFICATION
Pressure	2.8MPa
Speed	13M/S
Temperature	-30°C ~ 180°C

HEXATECH TRADING CO.

Hexatech Trading Co. designs and manufactures high-performance mechanical seals and related products for diverse heavy and process industries worldwide.