M74D-70mm/G9 Mechanical Seals Double Face Dual Seal for Chemical Pumps (Material: SIC/SIC/SIC/VIT Or TC/TC/TC/VIT)

• Customization: Available
• Structure: Single End
• Pressure: High Pressure Mechanical Seals
• Model NO.: AKM-M74D
• Speed: High-Speed Mechanical Seal
• Temperature: High Temperature Mechanical Seal
• Standard: Standard
• Balance: Unbalanced
• Transport Package: Carton
• Trademark: Akman
• Origin: China
• HS Code: 8484200090

Product Description

Product details
Features

• For plain shafts
• Dual seal
• Unbalanced
• Rotating multiple springs
• Independent of direction of rotation
• Seal concept based on the M7 range
• Variant with pumping screw available (M74F-D)

Advantages

• Efficient stock keeping due to easily interchangeable faces
• Extended selection of materials
• Flexibility in torque transmissions
• EN 12756 (For connection dimensions d₁ up to 100 mm (3.94")

Recommended applications

• Chemical industry
• Process industry
• Pulp and paper industry
• Low solids content and low abrasive media
• Toxic and hazardous media
• Media with poor lubrication properties
• Adhesives
• Chemical standard pumps

Operating range
Shaft diameter:
d1 = 18 ... 200 mm (0.71" … 7.87")
Pressure:
p1 = 25 bar (363 PSI)
Temperature:
t = -50 °C ... 220 °C
(-58 °F … 428 °F)
Sliding velocity:
vg = 20 m/s (66 ft/s)
Axial movement:
d1 up to 100 mm: ±0.5 mm
d1 from 100 mm: ±2.0 mm

Materials
Seal face: Silicon carbide (Q1)
Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1)
Seat G4, G6 (Q1, Q2), Seat G13 (A, B)

Secondary seals: EPDM (E), FKM (V), FFKM (K)
Springs: CrNiMo steel (G)
Metal parts: CrNiMo steel (G), Duplex (G1)

AK-M74-D Dimensions(mm)
Size	d	D6	D7	D3	d1	L1	L2	L3
18	18	27	33	33	3	38.0	11.5	19.5
20	20	29	35	35	3	38.0	11.5	19.5
22	22	31	37	37	3	38.0	11.5	19.5
24	24	33	39	39	3	38.0	11.5	19.5
25	25	34	40	40	3	38.0	11.5	19.5
28	28	37	43	43	3	39.0	11.5	19.5
30	30	39	45	45	3	39.0	11.5	19.5
32	32	42	48	47	3	39.0	11.5	19.5
33	33	42	48	48	3	39.0	11.5	19.5
35	35	44	50	50	3	39.0	11.5	19.5
38	38	49	56	55	4	41.0	14.0	22.0
40	40	51	58	57	4	42.0	14.0	22.0
43	43	54	61	60	4	42.0	14.0	22.0
45	45	56	63	62	4	42.0	14.0	22.0
48	48	59	66	65	4	42.0	14.0	22.0
50	50	62	70	67	4	43.0	15.0	23.0
53	53	65	73	70	4	43.0	15.0	23.0
55	55	67	75	72	4	43.0	15.0	23.0
58	58	70	78	79	4	56.0	15.0	23.0
60	60	72	80	81	4	56.0	15.0	23.0
63	63	75	83	84	4	55.0	15.0	23.0
65	65	77	85	86	4	55.0	15.0	23.0
68	68	81	90	89	4	55.0	18.0	26.0
70	70	83	92	91	4	56.0	18.0	26.0
75	75	88	97	99	4	56.0	18.0	26.0
80	80	95	105	104	4	56.0	18.2	26.2
85	85	100	110	109	4	56.0	18.2	26.2
90	90	105	115	114	4	56.0	18.2	26.2
95	95	110	120	119	4	56.0	17.2	26.2
100	100	115	125	124	4	56.0	17.2	26.2

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