Akman Type 7440 Mechanical Seal Replace H7n Wave Spring Seal

• Structure: Single End
• Pressure: High Pressure Mechanical Seals
• Speed: High-Speed Mechanical Seal
• Temperature: High Temperature Mechanical Seal
• Standard: Standard
• Balance: Unbalanced
• Model NO.: AKM-7440
• Transport Package: Carton
• Trademark: Akman
• Origin: China
• HS Code: 8484200090

Product Description

Product details
Features

• For stepped shafts
• Single seal
• Balanced
• Super-Sinus-spring or multiple springs rotating
• Independent of direction of rotation
• Integrated pumping device available (H7F, H75F)
• Variant with seat cooling available (H75G115)

Advantages

• Universal application opportunities (standardization)
• Efficient stock keeping due to easily interchangeable faces
• Extended selection of materials
• Flexibility in torque transmissions
• Self cleaning effect
• Short Installation length possible (G16)

Operating range
Shaft diameter:
d1 = 14 ... 100 mm (0.55" ... 3.94")
(Single spring: d1 = max. 100 mm (3.94"))
Pressure:
p1 = 80 bar (1,160 PSI) for d1 = 14 ... 100 mm,
p1 = 25 bar (363 PSI) for d1 = 100 ... 200 mm,
p1 = 16 bar (232 PSI) for d1 > 200 mm
Temperature:
t = -50 °C ... 220 °C (-58 °F ... 428 °F)
Sliding velocity: vg = 20 m/s (66 ft/s)
Axial movement:
d1 up to 22 mm: ± 1.0 mm
d1 24 up to 58 mm: ± 1.5 mm
d1 from 60 mm: ± 2.0 mm
Materials
Seal face: Silicon carbide (Q1, Q2), Carbon graphite antimony impregnated (A), Aluminium oxide (V), CrMo cast steel (S)
Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1*, Q2*)
Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)
Springs: CrNiMo steel (G)
Metal parts: CrNiMo steel (G), Duplex (G1)
* Cannot be combined with seal face made of S
Recommended applications

• Process industry
• Oil and gas industry
• Refining technology
• Petrochemical industry
• Chemical industry
• Power plant technology
• Pulp and paper industry
• Food and beverage industry

• Hot water applications
• Light hydrocarbons

• Boiler feed pumps
• Process pumps

AK-H7N Dimensions(mm)
Size	D1	D2	D3	D6	D7	d1	L1	L2	L3	L5	L6	M
14	14	18	33	21	25	3	32.5	10.0	17.5	6.0	8.0	M5
16	16	20	35	23	27	3	32.5	10.0	17.5	6.0	8.0	M5
18	18	22	37	27	33	3	33.5	11.5	19.5	7.0	8.5	M5
20	20	24	39	29	35	3	33.5	11.5	19.5	5.5	8.5	M5
22	22	26	41	31	37	3	33.5	11.5	19.5	8.0	8.5	M5
24	24	28	43	33	39	3	36.0	11.5	19.5	5.5	8.5	M6
25	25	30	45	34	40	3	36.0	11.5	19.5	5.5	8.5	M6
28	28	33	48	37	43	3	38.5	11.5	19.5	8.0	8.5	M6
30	30	35	50	39	45	3	38.5	11.5	19.5	8.0	8.5	M6
32	32	38	55	42	48	3	38.5	11.5	19.5	8.0	8.5	M5
33	33	38	55	42	48	3	38.5	11.5	19.5	8.0	8.5	M6
35	35	40	57	44	50	3	38.5	11.5	19.5	8.0	8.5	M6
38	38	43	60	49	56	4	38.5	14.0	22.0	8.0	9.0	M6
40	40	45	62	51	58	4	38.5	14.0	22.0	8.0	9.0	M6
43	43	48	65	54	61	4	38.5	14.0	22.0	8.0	9.0	M6
45	45	50	67	56	63	4	38.5	14.0	22.0	8.0	9.0	M6
48	48	53	70	59	66	4	38.5	14.0	22.0	8.0	9.0	M6
50	50	55	72	62	70	4	42.5	15.0	23.0	8.0	10.0	M6
53	53	58	79	65	73	4	42.5	15.0	23.0	9.0	10.0	M8
55	55	60	81	67	75	4	42.5	15.0	23.0	9.0	10.0	M8
58	58	63	84	70	78	4	47.5	15.0	23.0	9.0	10.0	M8
60	60	65	86	72	80	4	47.5	15.0	23.0	9.0	10.0	M8
63	63	68	89	75	83	4	47.5	15.0	23.0	9.0	10.0	M8
65	65	70	91	77	85	4	47.5	15.0	23.0	9.0	10.0	M8
70	70	75	99	83	92	4	52.0	18.0	26.0	10.0	10.0	M8
75	75	80	104	88	97	4	52.0	18.0	26.0	10.0	10.0	M8
80	80	85	109	95	105	4	51.8	18.2	26.2	10.0	9.8	M8
85	85	90	114	100	110	4	56.8	18.2	26.2	10.0	9.8	M8
90	90	95	119	105	115	4	56.8	18.2	26.2	10.0	9.8	M8
95	95	100	124	110	120	4	57.8	17.2	26.2	10.0	10.8	M8
100	100	105	129	115	125	4	57.8	17.2	26.2	10.0	10.8	M8

Daria Li
 
Website: http://akman2006.en.made-in-china.com