Business Segment Information - Revenue by End Market (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 282.7	$ 303.0
Sealing Products
Disaggregation of Revenue [Line Items]
Net sales	214.9	223.7
Engineered Products
Disaggregation of Revenue [Line Items]
Net sales	67.8	79.3
Aerospace
Disaggregation of Revenue [Line Items]
Net sales	14.8	14.8
Aerospace | Sealing Products
Disaggregation of Revenue [Line Items]
Net sales	12.5	12.1
Aerospace | Engineered Products
Disaggregation of Revenue [Line Items]
Net sales	2.3	2.7
Automotive
Disaggregation of Revenue [Line Items]
Net sales	20.7	24.3
Automotive | Sealing Products
Disaggregation of Revenue [Line Items]
Net sales	0.2	1.0
Automotive | Engineered Products
Disaggregation of Revenue [Line Items]
Net sales	20.5	23.3
Chemical and material processing
Disaggregation of Revenue [Line Items]
Net sales	23.0	27.6
Chemical and material processing | Sealing Products
Disaggregation of Revenue [Line Items]
Net sales	12.9	15.4
Chemical and material processing | Engineered Products
Disaggregation of Revenue [Line Items]
Net sales	10.1	12.2
Food and pharmaceutical
Disaggregation of Revenue [Line Items]
Net sales	11.7	9.9
Food and pharmaceutical | Sealing Products
Disaggregation of Revenue [Line Items]
Net sales	11.2	9.7
Food and pharmaceutical | Engineered Products
Disaggregation of Revenue [Line Items]
Net sales	0.5	0.2
General industrial
Disaggregation of Revenue [Line Items]
Net sales	65.4	69.8
General industrial | Sealing Products
Disaggregation of Revenue [Line Items]
Net sales	46.0	43.5
General industrial | Engineered Products
Disaggregation of Revenue [Line Items]
Net sales	19.4	26.3
Medium-duty/heavy-duty truck
Disaggregation of Revenue [Line Items]
Net sales	68.9	89.4
Medium-duty/heavy-duty truck | Sealing Products
Disaggregation of Revenue [Line Items]
Net sales	68.8	89.2
Medium-duty/heavy-duty truck | Engineered Products
Disaggregation of Revenue [Line Items]
Net sales	0.1	0.2
Oil and gas
Disaggregation of Revenue [Line Items]
Net sales	25.4	24.8
Oil and gas | Sealing Products
Disaggregation of Revenue [Line Items]
Net sales	15.0	14.3
Oil and gas | Engineered Products
Disaggregation of Revenue [Line Items]
Net sales	10.4	10.5
Power generation
Disaggregation of Revenue [Line Items]
Net sales	14.3	13.0
Power generation | Sealing Products
Disaggregation of Revenue [Line Items]
Net sales	9.9	10.6
Power generation | Engineered Products
Disaggregation of Revenue [Line Items]
Net sales	4.4	2.4
Semiconductors
Disaggregation of Revenue [Line Items]
Net sales	36.5	25.6
Semiconductors | Sealing Products
Disaggregation of Revenue [Line Items]
Net sales	36.5	25.6
Semiconductors | Engineered Products
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Other
Disaggregation of Revenue [Line Items]
Net sales	2.0	3.8
Other | Sealing Products
Disaggregation of Revenue [Line Items]
Net sales	1.9	2.3
Other | Engineered Products
Disaggregation of Revenue [Line Items]
Net sales	$ 0.1	$ 1.5