Connector Sizes

BFM^® spigots and connectors are available in a variety of set diameters in 50mm (2") increments, from 100mm (4") up to 1,650mm (65").

Most of our connectors are available in standard lengths starting at 80mm (3"), then in 50mm (2") increments from 100m (4") up to 6 metres (19ft 8").

(Note: for larger diameters from 700mm (27.5") upwards, certain length restrictions apply).

Please refer to the table below for a general guide to the available diameters and lengths relevant to each type of BFM^® connector - contact your local Distributor if you have any further questions, or try our FAQ's:

	Connectors (without rings)	Connectors with Rings	Spigots
Minimum diameter	100mm (4”) (then available at 125mm (5”) & 150mm (6”) and in 50mm (2”) increments) NB: Flexi not available in 125mm (5") diameter	100mm (4”)	100mm (4”) (then available at 125mm (5”) & 150mm (6”) and in 50mm (2”) increments up to 1.65m (65”)
Maximum diameter	300mm (12”) for Flexi 650mm (25^1/2”) for TR 1.650m (65”) for standard	500mm (20”) for SS Rings 1.0m (39^1/2”) for Plastic Rings (consult factory)	1.65m (65”) (no custom sizes available)
Minimum Length	80mm (3”) (except as noted below) 100mm (4") FM1 200mm (8”) Flexi 350mm (14”) for fitting on a tumbler or gyratory screening machine	150mm (6”)	37mm (1^1/2”) NOTE: If tail is cut down, ensure there is a heat sink to prevent distorting the spigot when welding onto pipe.
Maximum Length	(From 100mm, connectors are available in 50mm (2”) increments up to:) 200mm (8”) Ø 1,050 - 1,650m (41-65”) ALL 500mm (20”) Ø 700mm - 1,000mm (27^1/2-39^1/2”) ALL Then for Ø up to 650mm (25^1/2”): 800mm (31^1/2”) for tapered Seeflex 060ES 1.0m (39^1/2”) for Seeflex 060ES, FM1 & Blanking Bins/Socks 1.5m (59”) for LM3, LM4 & Teflex 2.0m (6ft 6^1/2”) Ø up to 650mm (25^1/2”) 040AS 4.0m (13ft 1^1/2") for Flexi 6.0m (19ft 8”) Ø>650mm (25^1/2”) for Seeflex	500mm (20”) Ø 550mm-1.00m (21^1/2-39^1/2”) (Plastic rings only) 2.0m (6ft 6^1/2”) Ø up to 650mm (25^1/2”) 040AS 4.5m (14ft 9”) Ø>500mm (19^1/2”)	89mm (3^1/2”) Total length Head = 37mm (1^1/2”) Tail = 52mm (2^3/64”)
Other	The smallest installation gap a connector can be fitted into is 65mm (2^1/2”) (for an 80mm (3”) long connector). Note: This may not be suitable for frequently changed connectors or those with more than a small amount of vibratory movement.	Distance between spigot & rings: for 150mm (6”) long = 75mm (3“) for all other lengths = 100mm (4”) Multiple rings evenly spaced at a min: 100mm (4”) apart for CL > 850mm (33^1/2") (max 4 rings) 200mm (6") apart for CL ≥ 850mm (33^1/2") (max 10 rings)	Diameter (Ø) Measurements: 100mm (4”) Ø is measured to outside edge (OD) (to fit standard tube) 125mm (5”) Ø & over measured to inside edge (ID) (to fit standard pipe)
	Blanking caps and socks/bins available from 100mm (4") to 650mm (25^1/2") diameter	Only Seeflex 040E, Seeflex 040AS, LM3, LM4 and Teflex are supplied with rings (Seeflex 020E on request only).	Wall Thickness: 100mm (4”) Ø are 1.5mm (^1/64”) thick 150mm (6”) Ø & up are 2mm (^5/64”) thick
	All Ø 800mm (31^1/2”) & over have finger-loops as standard to aid installation from one side	Maximum number of rings: 10	Available in T304L SS and T316L SS, as well as C22 Hastelloy
		Tapered connectors cannot be made with rings	Internal finish of the stainless steel is 0.8Ra micro-metres (32Ra micro-inches).

Connector Quick Ref Facts

	020E	040E	040AS	060ES	Flexi	LM3	LM4	FM1	Teflex
Operating Temperature (Continuous) (Surge)	-25 - 80°C (-13-176°F) 100°C (212°F)	-25 - 110°C (-13-230°F) 120°C (248°F)	-25 - 95°C (-13-203°F) 100°C (212°F)	-25 - 120°C (-13 - 248°F) 130°C / 266°F	-20 - 85°C (-4-185°F) -	-70 - 94°C (-94-201°F) 107°C (225°F)	130°C (266°F)(Max) 150°C (302°F)	130˚C (266˚F)(Max) 150˚C (302˚F)	260°C (500°F)(Max) 280°C (536°F)
Maximum operating pressure	1.5 PSI 0.689 kPa 0.1034 BAR	5.0 PSI 34.474 kPa 0.3448 BAR	5.0 PSI 34.474 kPa 0.3448 BAR	19 PSI 131.000kPa 1.310 BAR	-	-	-	-	-
Surface Resistivity (Ohms)	10¹⁰	10¹⁰	10⁸	10¹⁰	N/A	10⁸	10⁸	10⁸	Insltve
FDA Approved	CFR 177.1680 & 177.2600	CFR 177.1680 & 177.2600	CFR 177.1680 & 177.2600	CFR 177.1680 & 177.2600	CFR 177.1680 & CFR 21 177.1550 (adhsvs) & 177.2600	CFR 21 177.1680 & 177.2600	CFR 21 177.2800	CFR 21 177.2800	CFR 21 177.1550
3A Certified	Yes ( 20- )	Yes ( 20- )	-	TBC	Yes ( 20- )	-	-	-	-
EU Approved	EC 1935/2004, 2023-2006 & 10/2011	EC 1935/2004, 2023-2006 & 10/2011	-	EC 1935/2004, 2023-2006 & 10/2011	EC 1935/2004, 2023-2006	EC 1935/2004 & 10/2011	EC 1935/2004 & 10/2011	-	-
ATEX Certified	All dust explosion hazardous areas (some restrictions apply).			TBC	Restrict- ions apply.	-	Restrict- ions apply.	-	-