<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET, STATEMENT OF OPERATIONS AND NOTES TO THE
CONSOLIDATED FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS AND FOOTNOTES
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   9-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1997
<PERIOD-START>                             JAN-31-1998             JAN-31-1997
<PERIOD-END>                               SEP-30-1998             SEP-30-1997
<CASH>                                          31,319                       0
<SECURITIES>                                       330                       0
<RECEIVABLES>                                  187,628                       0
<ALLOWANCES>                                    (7,703)                      0
<INVENTORY>                                     78,062                       0
<CURRENT-ASSETS>                               317,858                       0
<PP&E>                                         269,196                       0
<DEPRECIATION>                                (140,457)                      0
<TOTAL-ASSETS>                                 547,342                       0
<CURRENT-LIABILITIES>                          148,093                       0
<BONDS>                                        150,618                       0
<PREFERRED-MANDATORY>                              197                       0
<PREFERRED>                                          0                       0
<COMMON>                                             0                       0
<OTHER-SE>                                     242,861                       0
<TOTAL-LIABILITY-AND-EQUITY>                   243,058                       0
<SALES>                                        232,037                 245,112
<TOTAL-REVENUES>                               445,819                 444,182
<CGS>                                          157,897                 165,143
<TOTAL-COSTS>                                  320,831                 310,230
<OTHER-EXPENSES>                                19,202                  18,911
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               6,073                   5,657
<INCOME-PRETAX>                                 38,878                  49,089
<INCOME-TAX>                                    13,996                  17,672
<INCOME-CONTINUING>                             24,882                  31,417
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    24,882                  31,417
<EPS-PRIMARY>                                     1.19                    1.48
<EPS-DILUTED>                                     1.19                    1.41
        

</TABLE>